First attempt making a wallpaper, it's pretty basic...And I'm not a photoshop pro by any standards, but here it is.

For a first attempt it's not too bad, I would suggest working on the outlining of the characters and also their sizes..I'd definetly say keep making more

For a first attempt thats good. Just work on cutting them out or maybe using some PSD's, the actual background looks really good.

Nice idea, but you might've wanted to feather the edges of your cuts so they aren't aliased and stick out. Also the Heroes logo looks kinda squished. Keep at it

not too bad