Damn, that's a lot of banners. All of them were great, it was hard to pick only 3 ^^
I personally felt that making an autumn banner that would fit in the blue template wasn't an easy thing, so my first criteria was a nice use of colors to keep it pretty while still showing some autumn.
1) ^Aya^ -
04
Pretty simple but works very well if you try to paste the banner on an Animesuki page, the font can be viewed easily and fits in well.
2) Deathkillz -
09
Nice use of the characters' hair to make the autumn colors fit in well. The background is good, not too flashy.
3) SaiyaGina -
49
Great style used to introduce autumn colors. The font is also original and clear.
I hope everyone tries at least once to put their favorite banners on an Animesuki page screen, to make sure it still goes well with the theme. It's at least a way to narrow down your choices if you were like me and loved at least 10 of these