Its going to be beautiful! My mom used to have a saying, "Don't eat the cow, then choke on it's tail!" Looks like you've already eaten the cow... so don't stop now! I feel your pain with the tugging and pulling (I have a bad back and neck, too) but take it a little at a time and soon it will be done! You can do it, you will do it! I'll be watching for the finished picture. Keep up the great work.