See what Louise del Balzo has done here? Same as before - big balls thrown into a frame with added spot of colour - bold effect no messing. Those 'big balls' are probably of Teucrium interior design design garden design decorating before and after
TOP 10 Best Plants for Hedges and How to Plant Them
I'd use flowering shrubs rather than evergreens, a few different kinds, and arrange them in a reverse symmetry.] A long, thin garden with plenty of room for puppy to play and lots of privacy from the neighbours.