VictorR:
I wouldn't reccomend starting off looking at anime characters as their anatomy is usually abstract from the start. It usually helps to add realistic anatomy as it usually makes things look better in the end. I tried a quick edit to show what I mean:
No Ryu of course, but I managed to correct a few wrongs by comparing the abstracted parts with realistic measurements. For example, his head was too small for his body, his back extended too far to the right and so did his right (our right) arm. Both arms and hands needed resizing and I chose to exaggerate your lightsourse to show you the volume you missed. Personally, I think you are using way to many colours, some of which are barely visible and can be removed in favour of a single colour. I didn't add the glowing ball because I would have to add a second lighthsourse and colours to your palette and thus make this comment a little less usefull.
I'm sure there are a lot of faults in mine as well, but like you, I'm still learning human proportions. Hope I could help.
tomster 785:
I'm afraid I disagree with your palette change. It is Ruy's colours allright, but your overall contrast and shading won't improve VictorR's picture much IMO. Here's what I mean:
I did an edit on your piece and used your beam to create shadows. Using your palette, I didn't get enough contrast for the shadows and the overall contrast varies from colour to colour. VictorR's palette has a even balance and good contrast between light and dark and works well if used to it's full extent.
I hope you don't mind that I tried to correct your anatomy. I tried, but I couldn't get the shadows to show the colour use the way Ryu was at the time. Was on a roll I guess.
Keep it up.