This is, I belive, a good way of creating buildings by yourself, I tried this last night too. You have to be outside for this or at least near some open space or something outside. When you are; visualize clouds on the horizon. I found out that it's quite easy to make them become anything since you probably irl do this with real clouds. When you have shaped them to what you want (remember to shape them with your mind, not your hands because this is harder since distances seem to be something your mind can have troble with) make them solid by thinking of them as castles or temples or whatever you make them, this is easier than it sounds I think since you usualy do this in real life too. I made a huge temple and tried to enter it, however when I came out again it had changed into something else, a woodenboat I think?!

So btw, how do you make it rain? I tried this for a long time but it sure as h*ll didn't work by JUST wanting it to rain.