OK....

I am thinking all over what to do from now on, and I was given by a dear uncle what seems to be a part of "theory" of how to do compositions of wallpapers and photos

Is what I already do in this soft, to get 4 wallpapers, re work what they have and form a new one I like

So I know much about it, how to work with layers, the magic wand etc but I dont understand for example how to blend layers so the part of the composition dont get "bad"

I need theory for working art like that level

Where can I go or I just practice in this software? I pretend some day to be a good artist and to like what I do and others too

what you suggest me to do? I already printed the manual of art rage I am learning tons from it