The "How-to"

[Networks]

How do you become generally good at creating graphics?
The fact is practice makes perfect. There's no real way to just become good, you need to develop your own technique and experiment a lot.

I want to get good like you said but how?
No one was born knowing (except me :P) how to create good looking fancy pancy graphics or even nice looking simplistic ones. There are a plethora of sites which you can look at but one that puts them altogether and its focus is primarily in Adobe Photoshop is http://www.good-tutorials.com/.

Ok, I am good now but I just suck at creativity...
One approach to this is to look at other high graphics sites, banners, signatures and attempt to do them or simply take ideas here and there and try them out for yourself. It's often surprising what you can learn by just looking around. You'll find once you become somewhat good that those highly abstract graphics you once thought were amazing are fairly simple in steps. One great place is http://clantemplates.com/. Just get inspired.

Now I am so elite!
Well you think you're leet sauce now huh? With graphics there can always come criticism and the only way to become better is to take the criticism in good light so post things you create and get feedback. The best thing about it is you find what other people think which helps you create something much better and more appealing to  an audience. One person I recommend and always will is: Quik. If your the type of person that can't take it than you're a pussy and you should take it like a man (if you're a women take it like man DAMMIT!). Another option is to try other things out. For example if your great at signatures try create a website layout. Switch things around and become better at things you suck at.

Alright I am bored with photoshop and graphics, ugh!
Your best bet is to simply just learn something new. Perhaps flash. Flash is always fun. :). Hell if your doing photoshop, do some tinkering with image ready.