Congrats on the ld! One thing I find very helpful to prolong dreams and also to keep you lucid is to have a task you really want to complete in the dream. Just concentrate on it and don't give up until you are satisfied with the result. This can take one or many dreams and it's usually a lot of fun. To give you some ideas here is a directory with tasks that DV members try out every month/thoughout the year:

Tasks

Good luck and have fun!