Glad you're still here now here's a section some of you should read when creating Original Characters. Take note that there are some pretty common problems in the fandom be it on Deviant art, or here.
STEP 1: ON DA? DRAW YOUR OCS DON'T RECOLOR!
This is a very common problem with a variety of Fairy Tail OCs. It seems that on Deviant art people think it's okay to recolor screenshots and call them your OC. You are not only committing plagiarism, you are being lazy. I hate to be mean but the truth hurts, recoloring and using bases for OCs is lazy. You see, recoloring just involves taking a screenshot, going into a paint program and coloring over everything. It's plagiarism because Hiro Mashima created those characters and you are coloring over them saying that they are yours. Imagine if someone else took one of your pieces of art, recolored it and called it their own. That's what you're doing. Traced bases are also in this category because it shows that you don't just recolor, it shows people that you're afraid to draw and you don't even want to try. You see, everyone's art style is unique so don't be afraid to draw characters in your art style at first, remember sucking at something is the first step at being sort a good at something. Sure, on tumblr there are role players with face claims but face claims are called face claims for a reason, they are not officially said Role Player's character, they are just using a face for their muses and actually credit the original source. All and all, learn how to draw. However, aside form just drawing you should also learn how to write a character as well.
STEP 2: MAKE THEM ORIGINAL!
In the Fairy Tail Universe there is a variety of magic that can be seen, and it would be refreshing to see some newer mage types. So please, keep the dragon slayer OCs light. The Fairy Tail guild itself has 4 dragon slayers, the series in general has seven dragon slayers so keep that in mind that not all powerful mages are going to be dragon slayers. Plus, dragon slayer magic is considered a lost magic, so don't make it common. You can do magic created around certain objects such as paper, or glass. You can do weather magic, sound magic, elemental magic, etc. That's the beauty of the Fairy Tail universe magic has variety. Also, try creating new guilds or put them into other guilds. While Fairy Tail is welcoming to just about anybody, there are other guilds as well be it dark guilds, legal guilds, etc. However, make sure that your mage is limited to only their magic alone. It's very rare that a mage can use two kinds of magic in the Fairy Tail universe.
Plus, don't copy and paste the personalities of other characters, that's also a sign of laziness. If we get clones of cannon or original characters it gets boring way too quickly. Give them varieties in their likes and dislikes. The manga has guild cards for a reason. Some characters can be cheery, others can be grumpy, and some can be more mature than others. Remember, human beings are not all the same, neither are anime characters. Also, try to give them some development in your fics, if they start out at one place but slowly evolve in character over time that's good. That means characters are going through development. For help, think about your favorite characters from different TV shows and why you love them.
STEP 3: GIVE THEM WEAKNESSES AND FOLLOW THE RULES OF ANY EXISTING MAGIC
You see, all mages have weaknesses and if a character is not weak to something, it's boring. If you have a character that can't lose they're too powerful and once again, it's boring. Even Fairy Tail's top mages can't win every battle they're in all the time, understand? Remember, motion sickness for high level dragon slayers is mandatory, with the exception of Wendy since she knows healing magic. In addition, you can't give them unlimited magic it's against the rules of the Fairy Tail universe and once again it makes them too powerful. Don't give them lost magic as their magic all the time, keep it sparse, it's called lost magic for a reason. Also, here are some signs that your OCs are way too powerful. Can they beat Gildharts Clive with just one hit? Too powerful. Are they seen as an enemy by Fairy Law casters yet are left unharmed? Too powerful. So make them flawed and make them beatable. Remember, the pokemon Sableye had no weaknesses along with Spiritomb, but nintendo flawed them in their stats and gave them weaknesses in gen 6.
STEP 4: CAREFUL WITH BLACK MAGIC
Also, unless they're part of some cult, criminal gang, or dark guild, don't give them magic that's banned. FYI no legal guild would be able to operate if they were housing members using banned magic. Why else do you think Bora is a criminal? He was using banned magic. So unless your OC is a criminal, don't give them banned magic.
STEP 5: WATCH THE CLOTHING
Remember now, make them outfits for different environments but keep one thing in mind. Nothing too flowy or loose. These kinds of clothes can get caugth in anything. So unless there is a certain amount of skill, NO CAPES! Take note that both Rouge Cheney and Gildharts did have capes, but their magic levels are quite high. Remember, capes have no use for combat.
STEP 6: NO NEED FOR A SOBBY BACK STORY ALL THE TIME
I know that Fairy Tail is deep and all but not all of the back stories have to be sob stories. Don't make them like that last one of their clans, or often trying to seek revenge. The back stories can be simple, but don't make them overshadow the main characters.
STEP 7: DON'T SHIP WITH CANNONS IF THEY ARE ALREADY IN A RELATIONSHIP OF HAVE ANOTHER CANNON CRUSHING ON THEM
Shipping with cannons can be very risky. And I do mean risky. You see some characters may be in a relationship already or have a crush on another character. In a nutshell, Juvia is not going head over heels for your male OC when she's in love with Gray. And none of the guys in the guild are going to fall for your OC instantly, just like cannon characters, build the relationship. If you're going to do instant love, make that original character a villain using banned magic or charms. Or make them some sort of supernatural creature in away but once again follow the rules of the set universe.
Please provide me with any questions.