Nice stuff. I particularly like the blue flower trees. That idea I may well pilfer 
For the blue flowers, I got from the cloth flowers, originally yellow, purchased at a flower shop. I have painted them with the colors for cloth, then I have inserted the shank in various pieces of brass tubes, one inside the other to have the effect that the trunk is larger at the base and becomes smaller as they are goes to the top. I wrapped the pipes with a strip of newspaper, and then I sprinkled with white glue. Above I put a layer of plaster for walls, resulting the trunk.