Coloring help...

Ok, see this icon by calixa



I'm trying to duplicate it [I'm trying to learn different methods of coloring, I'll never claim it as my own :)] and so far I have the main coloring down (for the most part):



But you see how calixa's icon has that browninsh kinda tint to it? (I don't really know how to explain it). How would you guys suggest I get that effect? I'm thinking something on burn or hard light, but I'm not sure. Oh, I use PSP, if that matters.

**EDIT** Now that I look at the two, I don't really have the coloring down...:\. Any ideas?