Make sure you take your time on every texture, no one is rushing you to finish and you shouldn't rush yourself. Refine every detail make sure the line work is nice and shade properly. This process could take 3 days or 3 months but do whatever it takes to make your textures dazzle.
For example, it took Calamity 1 year and a half to make my Slark set. Everything on it was beautiful and it was defiantly worth the wait.
Otherwise, i like the idea and it looks pretty damn good so far, keep up the good work man!