Whozawhat your bike is looking fantastic, and your guide is what I was talking about.
Personally I think your bike would look better without the plastic guide part. It isn't really necessary and it hides all your craftsmanship. The guide I made was from stainless steel so it would remain "slippery", and I get it free from work
and it has caused no damage to the belt. I hope you don't mind me making that criticism but I think a smaller guide would look better and more period correct. And I LOVE your bike so far.
I'm on my phone and haven't been able to get a link for a picture of my guide, but if youre interested you can search "Villiers Beach Cruiser" in the DIY section on the last page you can see a picture of the guide.