Lovely job! she's a cutie!

As for wanting to add some spacial-ness to your work, I can tell you something that helps me an awful lot. Try having a lighting reference open while you're painting, and refer to it often. Something like this: http://1.bp.blogspot.com/_eqdCOIVZf.....hadow+Demo.jpg You can look at any part you're on, compare it to the reference, and see how the light should be behaving on it. I noticed a difference the very first time I tried this and it's only gotten better from there, so maybe it'll work for you just as well! ^__^ I hope this helps ya out!

Thank you! That's really great advice :D It's definitely going to help. I'll try it on my next piece!

Y'should totally PM me and lemme know how it works for you! Also, if you want a buddy to scribble around with, by all means do the same. I'm always happy to have another friend to bounce art advice and whatnot around with!

I will! That would be really neat. I should say that I'm pretty reserved and often hesitate to approach people despite wanting to so don't be afraid to throw me a note or a shout or whatever either!

I love your colouring style <3

Thank you! <3

It took me a moment to get what you meant by spatial, but looking at NimRoderick's comment and the gallery linked, I think I get what you mean.
As such, I wanna link you to one of my favourite tutorials that deals with this stuff. Hope it helps!
http://androidarts.com/art_tut.htm

Yeah, I was thinking about form but 'spatial' was the only word that would come to mind while writing the description. I'm glad that both of you figured that out anyway. I changed it now.

That one is really good! I've known about it for years but I don't think I ever actually read through the entire thing from start to finish - except now, I just did. Thank you!