Recently I've had a student working with me as part of their Uni placement. They've proved to be a great help (more than I thought) and very enthusiastic about doing some of the more simple stuff and more recently a bit more creative and technical tasks. To be honest I'm going to be sad to see that back of them but an internship has come up in the big smoke for a great company and they have been invited to an interview. I've been asked if I'll give them a reference and although having mentored a few people over the years, I've never wrote one before. I'd really like to do my best by them without going over the top so if anyone's had any experience of either writing one or knows what to look for in a good one I'd be very grateful of any advice. I'm thinking I should outline what they've done with me, from when and how enthusiastic and the like. Am I on the right track?