My preferred way to receive visual references for your commissions would be if you create a link to either a Pinterest or Imgur board!
But if you would prefer to just upload references directly, here's a link to join a collaborative Pinterest Board!
https://pin.it/2x489QVA link to references via Google Images is fine as well.
I offer 3 free revisions DURING the linework phase!
(A revision is a redraw of *significant* portions of the sketch.)
Let's hash out the most important features here!
Once linework is complete, we move onto the color phase.
I offer 1 major revision for colors!
(If it's something like changing the background color or the color of a little detail, don't worry about it.)