To be honest, and this is my personal opinion, I'm not terribly impressed with it. It looks rather mainstream and it just doesn't feel like there's any emotion in it. It's like you're trying to imitate other, more successful graphic designers without really understanding what makes their works so great in the first place, instead settling for cheap imitations.
Your collage is, as Kinsei said in rather blunt terms, a clusterfuck of pictures, mostly unedited, seemingly put in a random fashion on the edges of the canvas. It feels very cluttered. You made a spelling mistake in the wording, which is more lulzy than anything else. And well, there just doesn't seem to be a focus, no life... no dynamism, if that makes any sense. It's like you just settled for this plain collage. If your aim is to be one of the best designers out there, then you have to aim to impress. You have to leave a part of yourself in every piece you make. Doesn't matter if it's schoolwork or not, when you make a portfolio, most of the work you'll put in there WILL BE -you guessed it- work you did at school. I know it sounds like a lot of mumbo jumbo, but it's only because I don't know how else to say it. There's nothing defining in this piece, and as Kinsei mentioned, there's no "flow" The eye is kind of just... lost. Maybe have your favorite things in that collage be predominant? Have them really stick out, and then just have the rest flow outwards. If that makes any sense. I just feel you really settled for the bare minimum of whatever this assignment asked of you.
The filtered girl is also nothing new. I feel like I've seen that style of picture a million times already, and most of the time executed in a more appealing fashion. I like the colors, not crazy about the little white snake things coming out from the top right corner. Feels like they were added in a rushed fashion to fill the otherwise empty right side of the image.
The Peyton render... I mean, call me crazy, I always figured renders need to have a message to them, a theme if you will. And I'm not really sure what you're trying to say here, other than "This is Peyton." What's the big exploding white blotch in the top left supposed to be...? A spotlight? And those things on the right...? The ones caught in the red/blue gradient? Barfing pacmen? Jellyfish? If you take Peyton out of the picture, it just looks like a bunch of random filters. There's abolutely nothing in the background that I, as a common mortal, can relate to football.
I dunno. A professional artist I may not be, but I still feel you should put a bit more effort in what you do. These seem very generic and mainstream. Don't be afraid to try new things, to send a message with your works, to show your stuff. Don't settle for the norm, go beyond it. That's what everyone here is really trying to say, each in their own way.