I need to draw some effects of fuel runs down a slightly grubby surface as well as stains left from rivulets of rain down across grime.
Which brush settings might do this so I can just draw downward and have an irregular wiggly line ?
Also create irregular edge of exhaust stain from aircraft exhaust as I draw a gentle arc left to right ? Then fill in between with solid colour.
Gosh, didnt think it would be that easy to find anything,
Will go and study, hope it does what I want.