Have just finished pruning some fruit trees down on the Mornington Peninsula in Victoria, a peach a nectarine an apricot and a lemon. All with the exception of the lemon were pruned in a similar fashion.
It’s important to remember that we want to shape the branches in a vase like manner and not have any branches crossing over. It is also important to make sure that the branches which will be carrying the fruit are not too long as the weight of the fruit will break them. The area where the fruit will grow is clearly visible so just reduce the length to a manageable size.
The fruit emerges on last years growth so be sure not to take too much off. I also recommend that you reduce the height of the tree so you can at least reach the fruit with the help of a small ladder.
The lemon tree was more a case of shaping and also reducing the height.