Posted: 07/08/2015 at 18:54
Looks ok to me too but to answer your question, this is what to do:
Prune a few inches from the tips of the strongly growing branches (which you don't want to grow any more), now. This is called 'summer pruning' which will restrict their growth and encourage fruiting spurs to develop on them.
For the weaker branches which you do want to grow more, prune those in the winter when they are dormant and cut them back by one third. This will encourage new growth in the spring. The harder you prune, the stronger the growth will be but don't prune branches by more then half their length. Also, don't winter prune more than about a third of all the branches on the tree each year.
Repeat this process each year until the tree has developed the shape you want. After that, only prune in late summer. It's actually quite easy if you follow these simple rules.