The green pixels of different color I have put meaningfully in order that you saw the difference better on having put do3D since the sprite is extended by 2 and the cut of the edges was not obvious very much.
In the folder "/personajes" you have the image without the green pixels, but it is difficult more of estimating the bad cuttin edges.

Also there is the image "Revoluciones.bmp" from MiniRacingOnline in the one that appreciates better the evil cuts away of the edges

Tries you with another sprite with more detail (or reduces the size of the current one to the half) to estimate better the bad cut of the edges.

Regards. :roll: