what program can I use to draw so I can use it in unity

Questions & Answers
1

I have a problem I can`t use Krita or FireAlpace to make a drawing to use in unity. So what program is good to draw in and can set it in unity?
And if someone uses Krita or FireAlpace how can I use the drawings in unity?

2

3dmax seems to be most popular and cutting edge for the pros but its expensive. maya seems to be the most popular free 3d modeling program. everyone says it works well.

FBX file format seems to be most universal that unity reads.