I've also been taking time to learn at least one new technique in Photoshop per week. After having been away from my work computer for so long, I saw that at some point I'd stopped getting any better. I guess I just settled into a routine. I have to force myself to break the bad routines.
So yeah, here's a side by side of the same image. I feel they look worlds different and hopefully it's translated into something that everyone can see. Enjoy.
Older version New version
I think the biggest difference is the line work. I found a means of inking that really tightens up my line work. I was free handing before, which a lot of people do, but I've never been one to use a heavy line weight when I pencilled. My lines would get thicker as I inked in photoshop because it was the only way I could really smooth them out. Now the lines are very close to what's on the paper.
I've also started to add a little (very little) depth to my colors. I've always cell shaded, which I still do, but I've started adding a heavy shade of the existing color as well. Once I've mastered this, I'll start adding hi-lights. If you look at my earliest photoshop stuff, you'll see I tried to do that early on, but I could rarely get that to work. I've found a lot of good resources deviantArt.com.
So yeah, baby steps... but I'm loving the walk.