don't be givin' me that 'old fart' crap. I'm 65 as of last Wed. Dirt was just a theory when I was born.
I suppose that any file format that preserves a transparent background will do. There's no advantage to .png other than habit. \:/ I will keep this thread going at least until I finish the image shown on page 2.
By then, I will have covered almost everything. Remember one important thing, a lot of techniques I've developed lend themselves to the type of work I've been doing for 40+ years. namely SF illustration. Many are digital adaptations of airbrush techniques. I also don't like using a bunch of layers. I'm old and tend to get confused easily......
By the way, I'll be posting a flock of new stuff soon on DA. Give us a look.
http://ronmatt.deviantart.com/gallery
Also, as we go along, specific questions will help us all.. Also, if you have to work in a demo version of
ZBrush and it doesn't allow you to save, just hit the 'print screen' key and paste it into PS. Be sure your 'Z' image is large enough though. The demo has no time restrictions (at least it never did before)