I love that you had an appendix for your praise. I occasionally forward these e-mails to my supervisor, but I rarely put them together with my project binders or reports.
Do you ever ask your project partners or customers to provide you with a review? Do you have a mini-survey that you use? I have thought about doing this, but I am not sure if people will be willing to take the time to do something so formal unless it’s part of a project charter.