I've only half-heartedly kept a bike-to-work blog for one winter, so I can't help much you on style and technical details except to say that your blog looks nice.

I'm very impressed at your skills though! If I were a customer, I'd enjoy reading a blog that included some kind of "a day in the life of"-writing, describing your actual work. The more detailed the better, what kind of customer, what kind of gear, colour, is it heavily used, is it hard to find repair materials etc. It would be interesting to read just because it's something few of us know much about, and from a business point of view it would both "show not tell" how professionally you work, and build rapport with you as a person.

Pictures are great, and there too, the more detailed the better. Closeups showing really excellent stitching would be very persuasive if I were considering sending some gear in for repair.