Most of these are very good, Nufan.
The 2nd banner on post 40 is a little too busy, too many pictures in the middle, yellow area. The first one, which you have in your sig, is pretty good. Your Vector picture looks very cool, but the shadows are too dark. If they were just a little lighter, that pic would be amazing. For a second, I thought he had a black eye.
I really like both of your Paramore banners, especially the second one. If you could reduce the brightness on just the face of the first one, that would make it better.
The desert city/johnnie walker are pretty amazing. They look like paintings.
Of all the other ones, I liked your Gambit posters the best. The Origins mock promo poster is good enough to be legit, and the banner was pretty good, too.
Keep up the good work. (Y)