Lol at the end. Congratulations on your first lucid dream! It sucks that you woke up only a few minutes after. That happened to me when I became lucid about two weeks ago, and had problems with stabilization. I just had a vivid lucid dream this morning, and I probably met my dream guide, but I'm not to sure on that ( probably a wanna-be DG)

After you practice stabilizing your lucid dreams, I think your mind will be able to manifest things like the desert instead of another garden. Like for me, I tried to call out a stress-ball so I can rub it to know that I'm dreaming, but a kneaded eraser in form of a ball came up.

It has a lot to do with day residue, like things you experienced in waking life, but everything is manifested in pieces.