Hi,
The best way I have found, is to get some books from the library, with pictures ofthe type of furniture I want. Then I measure my own stuff, ,and work from there. I used actual woodworking books, borrowed from my father, and used the same patterns. I reduced them to 1/25 scale, and went from there. (My dio was in automotive scale) remember, scratchbuilding is pretty easy when you break everything down to its simplest shapes. I got a "Most humorous" award with my dio, and I don't think it had to do with how funny all of the furniture looked, so I figure I did okay. I built mine out of styrene, and some metal, and then painted it to resemble wood. Real wood gets tricky to work with in those scales. If I had to work in wood, I would use a tight grained wood, like Basswood, or Jelutong. Then I would dye and polish to finish it.
Good Luck,
Dave