I would just like to say that the following artists are great to commission and work with:

Bloodhound Omega
Skulldog
beastofoblivion (Allison Theus)
Cara Mitten

I've commissioned each of them for a sketch or lineart in the past year and each one has provided me with rough sketches and kept me abreast of their progress. They also completed them in timely manner (especially given their general workloads!) So I wholeheartedly recommend them.