8 hours in not bad Andy...I think your being a bit hard on yourself...You had three first against you from the beginning.
1) First time shooting base clear
2) First time using the product
3) First time using the gun
I've mentioned to you before that in all the years that I've been painting, I've only had one or two jobs that I did and looked at it and said...this doesn't need a thing...I pick my own work apart and I'm my worst critic.
So chin up my friend, you did do a great job.