They're okay, if you really want to improve (this is just my opinion) I would work on my cuts (the pictures you use in your desktops look very choppy - the hair in your last desktop pic to name an example)
And I also think you should download new/more fonts - Arial and Times New Roman are nice for Word but in Photoshop shouldn't want to use them (you can try http://www.dafont.com)
Yah my problem is - I dont have much brushes. I was trying to find some for Photoshop 6.0 - useless. And its verry hars to find pictures of the LP guys when they are standing. Because most of the pictures got their legs cut off. And that makes the wallpaper look strange.