Criticism on my GBC sprites?

[Quirby64]

@ orochii : I think the laterals thing is the horizon line, right? I was using that because that's how I do it.
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The Lamborghini Bat! XD
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Thanks! ^^

@ Iocus : I actually dropped using pixel art for car selecting before I came to edit it. The advice could still help though!
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I made a "sheet" on the curve. Still big gaps between frames, but I'll get to that sooner or later.