The world is full of rules and guidelines for garden design if you care about such things. It never hurts to read up on any subject, just so you will know what rules you are breaking. Breaking rules is, after all, how most art happens. Anarchy in the garden is a harmless form of indulgence. As you go about your liberated way, trusting your instincts, your inner artist will begin to express itself, bringing you untold gratification.