A couple ogf years ago I bought this maple tree. It still needs a lot of branch structure. I will tre the hedge trimming methode that Walter Pall is highly talking about all the time. It is about letting th etree grow freely and then just cutting it like a hedge.. it will backbud and there will be much more branches to choose from in the future.. we will see.
Unfortunately the tree was taken out of the greenhouse too early and was exposed to very cold weather.. but I am sure it will do fine this summer.
The tree in December 2014 before some branch selection was done early spring.