Schwinn Cotton Picker Decals

[partsguy]

Good afternoon! I’m building this model below as a “COTTON PICKER” to accompany my white Corvette. Only problem is, MPC didn’t give this option from the factory (gee, I wonder why?). I am able to build my model but need some very small decals for the seat, chain guard, and seat tube. I need a “Cotton Picker” chain guard decal made from scratch. I have the other two decals but need them re-done in black.

Without a nice program on my computer to do this myself, what are my options?