I would add to that to spend a lot of time looking at trees. Go out and in the woods and look at them, particularly around cliff faces. Look at the bark, the trunk, the roots, and how they all fit together. Then look at each of your trees, and then ask yourself what each one wants to be.
Also, look at all of the pictures of bonsais here and other fora, same thoughts.
Then, get some more trees, then more trees, then get more stands in the yard to hold them. Then get a bigger yard. Then, since you have more space, get some more trees. Investigate the price of acreage in the area. Etc.