Well i also dont like leaving big spaces, but i had to because of the size (only one i managed to make under 1mb so far) animation adds on a shit load...took awile to find a host. (ended up using yahoo)
I think the backgrounds ok, nothing special, but its a typical bg...The other backgrounds looked terrible after being saved as a gif. So i just made a standard one.
Also u guys know how bad some gifs look after being saved (u can see the noise and stuff in the animation and on the faces) But thats the best quality i could get it.
...still trying to make a bg that doesnt get ruined after saving...
Tho i did end up moving the anim box to the left and putting in some text. Backgrounds same colour, but different brushes.