Replying to Holes in PVC rail Help

I made a 10 ft rail out of wood and PVC pipe, but I secured the pvc to the wood by drilling holes in the top of the pipe and then drilling the screws through the top of the hole openng down through the bottom of the pipe and then through the wood. I guess I'm second-guessing just a little bit and I'm worried that I'm gonna catch and edge on the holes in the pipes, I don't want to remake the whole rail- any suggestions as to how to maybe "cover up" the holes or something or will the holes not be a problem?