Woah, that's really awesome. I think I've only had one dream where I've done something semi-practical. My dream career is in surgery and I've seen many procedures on youtube and in textbooks. In one dream (I was not or maybe barely lucid) I practiced cardiac catheterization on a live patient which was amazing. Especially since I won't even get close to doing this IRL for around 9+ years! Somehow I seemed to remember the procedure and as far as I can tell I performed it like a pro ;D