Space between the image and the entry/sidebars can be brought closer.
Colour combination's choices should be reconsidered as well.

1. Why is your screenshot and your blogskin completely different?
2. I'm quite sure you got your codes from %PURPUR.black-, please credit her for your basecodes.

3. I think the colours (pink black white purple) don't really match.
4. The images need to be blended in order to match the background.
5. There's more room for improvement, good luck for your next skin!

Great!
How I wish I had photoshop.

Lovedrops♥
Thanks.

-missingin.action
Thanks, may I know how I can improve, because you gave me 4.5 stars? Where is the 0.5 star lacking?

coldwindz
Thanks.

candygirl♥
Thanks, okay.

;D
Thanks for the comment. Another childish blogskinner, candygirl♥..

blesphemy
Thanks.

I love blue!
But I don't like the background.
Is it only me? I think the background doesn't suit the skin.

-Say.goodbye`♥
Thanks for your comment, I will try to improve on that in my next skin.

!monster\
Thanks.

starrifique
It's teal, not blue. :X
Thanks.

candygirl♥
Thanks.
Could you tell me how I can improve, since I didn't get a full-mark from you?

xmissyger
Thanks for rating.

Supercalifragilistic expiailidocious.
(In short, fantastic)

The blockquote's background image can be lighter so that the words in it is more visible.