I'm sure this question has been asked before, but I'm having trouble controlling my LD's. This may be due to my inexperience, but all of the very few LD's I've had fade from memory pretty quickly, and while I'm lucid, there's little I can do to control or prolong them.

I guess that what this comes down to is a solicitation for advice from more experienced LD'ers. How long did it take before your LD's cleared up? How long before you were able to extend them?