I've just been having a go at making these for the first time and below are my first two attempts - one in a full-leaf green and the other a bit like a cherry tree in bloom though I like to think of it as a bubblegum tree as it's in a bold shade of pink!
There are many tutorials on the web about making these and of course slightly different techniques/ ways of making them, so obviously best to try a few and find the one that works best for you. I was happier with my second effort - the pink one - and that follows (more or less) the technique described here.
I tried these with silver plated wire as opposed to sterling as I didn't want to make any expensive mistakes and used glass chips but of course these can be made with any small beads (around 4mm) or semi-precious gemstone chips and the wire doesn't have to be silver either.
This is the sort of thing where you learn what works as you go along and you don't know til you try. One thing I would like is to be able to make them a bit smaller as they're (to me anyway) a bit reminiscent of the fashion for wearing VW badges in the 80s!! Quite big and blinging!! I'd like them a fraction more subtle. I think the pink one would actually look rather nice just hanging up in my bedroom rather like a dreamcatcher.