Here are a couple of holsters I completed and sold.
This one is for the S & W 686 or the GP100 with 4" barrel.
This one is for Ruger SP101 with 4" barrel.
Looks like you are off to a good start. Keep practicing. It takes lots of practice. I use Gum Tragacanth on my edges and rub them with a burnisher and it does a fairly good job.
Welcome to the leather workers site.
I would say you are doing very well for a beginner. You are also in a good place to learn, here on this site. Keep up the good work and keep posting.