Well - I'd say do whatever you like, as long as you come and join us.
Btw - nice clean painting so far. Next step would be shading and highlighting.
Some prepare washes - but that depends. Personally, I don't like them too much because I found thin liquids being difficult to control. I prefer painting shadows manually - mixing the original colour darker, then painting the foldings from the darkest to their brightest section. At the end, you mix the basic colour in a brighter way to paint the highlights.