I had another lucid dream last night (well actually this morning)

I have a few questions/issues:

1) At first I trying to fly and it was working pretty good, even though I didn't go very high. but later on all I could do was jump, I couldn't fly anymore. and I knew I was in a dream. how can I fix this?

2) I tried to turn invisible to see what would happen with the people around. It didn't work how can I do this? is there like a method?

3) one last thing I tried to was turn my pointed fingers into a gun I was thinking really hard about it and started to hear cocking noises but how could I shoot it? do I just think that I'm doing it

OH and most importantly,
4) I knew I was in a dream, but it wasn't from a dream sign. I don't even know how. But it was still like a normal dream, for some reason nothing seemed wrong/out of place at all, but it was all wrong. And somehow I was lucid. I kept experimenting (with the things above) because I knew I was dreaming. What's up with this ?