Hello Shipbuilder, very nice models you have made. I have also thought many times to build smaller models because building them doesn't necessarily need so much space and materials as bigger ones that I have built. But I think what you need more are the skills, because everything, including details, are so much smaller.
But in which scale are you building? And what kind of tools are necessary for these miniature models? And is there somewhere a book or tutorial to teach which materials and building methods are needed?