dream journal's definitely a good idea if you don't have one already.

it sounds like you had a pretty awesome and relatively long lucid dream, with a pretty good amount of control too which is great.

For the next one, definitely look into learning about increasing the clarity of your lucid dreams and learning better ways to control them. Also remember, recording them is important, whilst you might remember it a little clearer than most dreams, just like any other dream, it'll fade away from memory if you're not careful