Not a bad choice of class for a villain! Great looks for the character too. Makes sense, considering Sorcerer's are Charisma casters and all. You'd usually expect Warlock to be the choice of caster, since it's a pretty easy choice for villains. But I won't lie, I can see a lot of potential for a strong personality from a Sorcerer. Maybe arrogant due to their natural talent compared to other casters, but I'm just kinda thinking out loud.

You did a good job with this one, mate. The colours all blend well together in the palette, the choice of clothing is great, and the fire effect on her hand looks wicked. Hope the players are having a fun time with her.

They haven’t seen her yet. But I know that when they do, it will be a VARY painful battle swing as most of the players are melee heavy

Ouch, that's gonna be a bother. Hope they're ready. ^^; I kinda have a similar feeling about a new group of characters me and my mates have made.

I got some advice from a friend about a party composition I have with in another group, and he said that we'd have to play it smart. Vengeance Paladin, Wild Magic (i think) Sorcerer, Undying Warlock, and Horizon Walker Ranger. My Paladin makes use of firearms, so we're all very ranged based.
He reckons we could likely knock out most mooks within the first turn, but considering our lack of a full on cleric (Healing duty is split between me and the Ranger), we have to play it smart and really consider each fight.

Barbarian, monk, bard, 2 rogues, a Druid and a wizard. Because most of my stuff is home brewed due to Pokémon and because I want my players to have some sort of fun, they all have crazy abilities. But we don’t really have a healer. I know I shouldn’t but I gave the wizard a healing aura but everyone has to stay 10 feet around her at all times. I don’t think they realize they put the wizard in danger XD.

Honestly, I think that's a pretty fair thing to give the Wizard. It's a sort of 'Risk/Reward' set up: You can heal yourselves if you stick close to the fragile spellcaster, but you're all at risk if you do that. Bunching up in DnD is a pretty dangerous thing in a fight, after all. Hell, even our own Wizard in another game has the SpellSniper feat and stays WELL away from any chance of a fight.

Granted, I'm not an experienced DM, but I think that's an acceptable thing to do, considering the party layout. And it makes sense if the Wizard in question is from the School of Abjuration, but regardless it's helpful for everyone in a pinch. Just as long as they know what they're risking.