According to Google maps it is about 180 miles to Dallas. I'm sure there are plenty of folks on here that have had great experiences and tattoos in the DFW area. I'm in East Tennessee, so I don't know any there myself. Your description is very good and vivid. It should be easy for a good artist to make a great sketch from it, and adjust it as necessary to suit you. I suggest research of artists that are within your travel range and then contact them by phone. After narrowing the field of artists that you have gotten references for with phone interviews, you will know which one to send your description (and deposit) to for a sketch. It sounds like you want realism of a fictional character, but that is no big problem for a good artist. You may want to point out that you don't want it cartoonish (or you do).
And good luck with the migraines! I used to get ocular migraines (no pain involved), but haven't had one in almost a decade. I did have a classic migraine only once. I was in India on a mission trip in 2012, and luckily had a migraine pill (Axxert?) in my wallet that my wife had me carry for my ocular migraines. I was blessed that it worked in about 30 minutes. The pain was so bad that I couldn't even hold water or other medicine down, but 30 minutes after that pill I drifted off to a good sleep and woke the next morning feeling fine. Of course, I think that is one of the medicines for migraines that has been outlawed now.