You'd be better practicing more on tweaking each wallpaper before you post any.
I know you've just started and I was like that too, but your cut is really bad, they take a lot of practice to perfect.
Also try mixing it up with different fonts, I never use the ones already on the computer, download them from dafont or somewhere.
Don't bother with a wallpaper if you don't have high res pics. The Gleason cut is high res, but the dome in the bg isn't and they clash and make the roughness of Gleason stand out.
It really does take 2-3 months of practice and perfecting before you can even churn out a decent wallpaper, I'm probably at that stage.