I'm more than happy to work with you on your image. I like to share plenty of images of the work in progress. As such, there should, ideally, never be a point or need make significant changes to the work in later stages of completion. That said, I like my customers to be happy. Communicate what you want with me, and we can work it out. Work can take anywhere from a couple hours to a couple weeks, dependent upon complexity and present workload.
I am happy to connect with you on skype or discord, and am even capable of streaming working on your project for you.