HelpRotmg sprite help

Hello, I was wondering if its possible to make for example a 25x25 sword then downscale it so it would look like it was 8x8? to make stuff more round, and also if it would work with bosses lets say 100x100 to 18x18? it would be more detailed, but im not sure if its possible? anyone know thank you.

It would look terrible. You might be able to use it as some sort of baseline, then have to remake it completely so it looks visually appealing.