Toribash is a tough game, marketing is farely impossible without some sort of skills. So, I was wondering how do you make art, like head textures, and sets. I have looked through the web but nothing is helping. Any suggestions?

Here

just take the templates and draw
http://forum.toribash.com/tori_textures.php
really anyone could learn with just practice, that's how most people do it

though if your trying to get into art to make a quick buck, stop because you'll only make bad stuff..
most of the newer "artists" are just making half-ass finished textures just so they can sell, and they
are honestly not going to get better that fast if they stop when they think it's ready to sell..

the people at the Art Board can be critical, but a lot of them know what they're talking about.
make something you think is ready to show, or something you need help improving on and post it there.
take some of the advise you think helps and use it to improve your pieces and future work.