I have a hand drawn design that I would like to print in 3D. For this I need to make it an STL (vector). The problem I encounter is how do I make a sharp and smooth image from the hand drawn picture.
I filled it using a bucket tool in GIMP and it looks like it's going in the right direction. But now I'd like to make the gray lines black and make it a smooth picture overall.
Since I have zero experience with graphic design; how do I call this process and if you are familiar with GIMP, what functions should I try?
Tracing is ok but filling it with black is still not what I'd like.