I am a very talented 16 year old girl,
i'm around 5'4 or 5'5,
but my scale says around 218-221.
I really want to go into the art type biz.
Well for starters no matter what you are like you need to get some credentials. Modelling Jobs for local clothing stores (in your case maybe for the plus size catalogs) to get experience, Acting and modelling classes, and Arts classes in general are good to get. Also, you have to start at the bottom with everyone else and work hard to 'get discovered' in those industries. Keep your physical appearance in top form for those jobs. That means keeping your skin clear, your teeth white, your attitude positive. Attitude is alot. Those jobs are more cut throat than most. You have to take criticism and let it roll off you like water off a ducks back. The arts industry is cruel and hard. You need a tough personality, but you have to seem all nice and soft on the outside. Feathers outside steel inside. Education and attention to your personal appearance, develope your own style but ALWAYS keep up on styles and trends. That is the core of your chosen profession. Also if you have skeletons in your closet bury them deep and if they are discovered, go to rehab or some such thing and make it public knowledge that you are reformed. The sob story followed with the 'I Came through it' story is a good career move. Best of Luck to you. in those jobs everyone needs luck, as many who have it all never make it.. Also get a second profession to fall back on durring the tough times and if you do start to make it get a good financial planner as it never lasts.
dont worry about your size! youre just a normal girl trying to succeed in this biz! start out like any other person, get some lessons, an agency maybe, you'll get started there and work your way up nomatter what size! goodluck!
I'm not going to lie, it will be more difficult for you because -- unfortunately -- show business is very superficial, and many times anyone who hasn't got the "perfect" look will be skipped over, even if they're more talented than their peers.
The most important thing to do is develop confidence and presence, as well as the ability to recognize constructive criticism while rejecting ideal-motivated criticism. Dress to flatter yourself, keep your hair and complexion in control, and learn how to apply makeup that compliments your face. Never go into something if what they request of you is to "just lose this much," because no matter how much weight you lose for them, their reaction will always be the same -- "Just five more pounds." This is especially prevalent in modeling, though it's not unheard of in entertainment.
If you're eager to get into acting, definitely start out with local theatre, even if you really desire to be on camera. Theaters, especially those with smaller-scale productions, usually focus on talent rather than size and are therefore a good place to start out with.
Don't give up after a few failed auditions. Pretty much everyone, regardless of size or talent, goes through a lot -- sometimes dozens -- of auditions before getting a role, and that role may not even be a big one. Everyone has to start somewhere, and you should treat whatever role you get as an important one, even if you've only got one line. Perseverance is everything in the acting business, so if you really want it and are willing to fight for it, you'll find your niche. Good luck.
They need all shapes and sizes. But for your own sake try to do something about your weight. The older you get the more difficult it is to control. Take it from one who knows.