You are right mate you have improved, here are some tips for the lara wallpaper:
I can see that you have cut out the end of his legs, instead of doing that, you can use
the rubber tool and it will look way better or you can use the rubber tool after what you
have done to make it blend in.
Im not too fond of the text because of the colour choice and I don't like the stroke.
Also remember to give the render some effects.
Keep trying and i'm sure if you follow everyone's advice you will improve heaps more.