Headliner: Install failure - Wat da fau?

On Saturday I made a crucial mistake in my headliner install. I had finished installing the padding, but I made one cutting mistake on the rear window piece. I am going to contact my vendor to see if I can buy only a replacement rear window piece or if I will have to repurchase the whole kit. In either case, I have up to four times to completely screw up. The kit cost $98 plus shipping. The cheapest install price I had received for the install was $500. I will upload pictures later and I'll explain my mistakes. I will be a professional before this is over. The old saying is true, an education always cost money. :-) The vendor said they do not sell pieces of the kit, but does sell the cloth by the yard ($34 per yard). All I have to do is send in a swatch sample and they will send it to the manufacture for a match. This is going to prolong my project, as the rear pieces must be installed first. The vendor is Wolfsburgwest. They are awesome to deal with when you have a problem.