The first thing that will happen is that you will send me your ideas and references for me to get started on a rough sketch of the piece. From there, you will tell me if it reaches your standards and if you are still willing to work with me. After you approve the rough sketch is when you will make the payment.
If anything happens where the artwork does not meet your requirements during the final draft you will be paid back. However, because of safety reasons involving my artwork, I will leave my watermark on the artwork until the commission between us is done and both parties are happy with the finished product. Once the client and artist have agreed that they are happy and the watermarks are removed, the "contract" is over and any payments made are final. So, you can dislike the artwork and I will pay you back, but you do not get to keep that artwork, my watermark will stay on it. If everything goes well, your final piece will have no watermark.
(I know this can seem harsh but there have been many problems in the past of theft)
I also have a instagram and a deviantArt where I occasionally post my work. I will give credit to you and your ideas as a commissioner. I will not post on any of these platforms if you expressly state.