Amount of pixels, amount of colors, amount of frames

Well that image is 34kb at the moment. The way gifs work is by replacing frames or overlaying them. This means that file size is ultimately determined by the number of pixels that you want to animate.

Having cogs turn or eyes in that black part don't sue very much pixels, so they are quite cheap I would say. Having a bird fly across might use more pixels (since it has to go across the entire width of the image and it's about 20 high so 150x20) so be more expensive.

You could certainly do it, my avy for example (the cirno one) is 100x100 21 frames totally unoptimized - that's 210,000 pixels.

But you do need to know about gifs.
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NP, there's certainly no need to do something that doesn't need to be done :P


Btw I removed some of your black spots:

I dunno what that tool you used did but some of the frames have some weird looking shit (like that one frame where the tip of that hat flicks out and suddenly becomes this big black blob...)

Thanks you all guys, i think i have enought infos.

Close please.