I currently have a newly planted( this spring) Knockout Rose tree. We absolutely LOVE the tree, however I’m certain I am pruning/trimming it incorrectly. It had lost its rounded shape and is now lopsided and looks unkempt. I cant seem to find good I formation or help anywhere. It is blooming very well, and seems by all what I can tell to be very healthy. It’s just starting to look unruly. Help!

I‘m sorry for the bad picture,

but as you can see the branches seem to be sagging, it’s spread open and lopsided. Can this be fixe?