Be gentle >_> It was supposed to be a desktop and I realized I used to wrong size. *lols at use of filters and brush*
I think it's pretty dang good for an early creation. You actually gave it a pretty good 3D effect, which is great! ^^
Wow, that's a desktop that really drags you into the image! It's built up pretty good, I like the idea you went for! Reminds me of when you travel to world with the Gummiship at high speed. :3 The yellow may be too.... yellow - if you want them to be more magic/star effect looking you should let them shine more, white is a smart colour to start experimenting with. I think I saw a Photoshop tutorial on DA for magic light source effects, you can probably make use of it's technique on the gimp too - I could find the link for you if you want to have a look.
I like all the speed and action. It's like a bunch of stars are getting sucked into a white hole ;D. It's pretty good for a desktop BG. Try making the color flow together better. Stars are usually white unless they're going supernova anyways ;3. But otherwise, sweet job. Overall I say a 6.5/10. Crono has sent jugdement ( ´_ゝ`)
I like the whole 3-D Effect. I just kinda think the yellow is a little bright. Although I might just be too tired to look at very bright colors at the moment lol.
Blur and sharpen parts. Also, recolor it so that the colrs match a little better, or just make it b/w.