O.K,now about the Flower. Realy nice,it has an oversized green plant holder,but the colors are awsome,also the shading! 

Thank you! I'll sure give credit!   

 Sure, use any colors you want from my work :)

Can I use the colors?

I think the leaves need to look a little thinner, they arent quite reading like leaves. The flower on top is much too small as well.  The colors are coming along well, I'd brighten the red a little though.

 I know it's really thick, although I wanted it like that, I know they're not like that in reality. :)

 That's a thick stem, nearly a trunk