If you learn more effective ways to draw facial features you'll be a better artist than 90% of Deviantart.
I'd say that the character art was okay, the line work just needs some double-checking on Kroeh's hair, as some lines are get thinner unexpectedly at parts.
With the background however (since you were using assets) looks fairly pixelated.
When using graphics from an asset site or otherwise, make sure that you use as little enlarging possible, it will degrade the quality of the image and it won't look as well as it does in it's standard size.
Finding a larger image or drawing characters at the same resolution as the background at will make your drawings significantly clearer.
Keep up the good work though!
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