My banners are on a light pole on Commercial in downtown Nanaimo - just across from the Nanaimo Harbourfront Library. I think they look great and - since I was executive director of the VIRL for 10 years - I love the location ! I never actually worked in Harbourfront - but I often went there for meetings and so on. I wonder if anyone at the Library will notice my name on the banners and, if they do, if anyone still remembers me.
I learned a lot just looking at the banners that I had watched people working on. I realized that the details get lost when the banners are way up high. It is most important to focus on a good design and good colours. Don't sweat the small stuff and don't get carried away with shading. NEVER try to shade more than two colours (e.g. turquoise to blue or yellow to orange is as far as you should go).
Don't the banners look great against the trees!