Welcome to the Guild Gary! Well the first thing I would say is that, unless time is a real obstacle, you should have a go at a tutorial or two before deciding on whether or not to offer a commission. You may be surprised at what you are capable of once you give it a go. However if you do decide to offer a commission, do read through the sticky in the Map Requests section before posting. Best wishes on your project.

Cheers,
-Arsheesh