The big obstacle for me is time. While this is obviously the reason for working with you, it was initially a barrier – as I imagined that I would need to spend more time managing the work you do for me. Happily, this is not the case!
I now have peace of mind that the elements of project work are being done. More than this, you regularly go above and beyond the brief and suggest ways to improve things.
Your initiative, flexibility and enthusiasm are all great things that come with your service.