Piano Lesson: It Is Easy To Compose Piano Sheet Music
Why is it easy to compose piano music?
Because you have to start from where you are. This should be fairly easy; Otherwise you have not started from where you are.
A suggestion is to start writing piano pieces for beginners in a progressive order. The idea is that as the pieces get more complicated for the player they will also become more complicated for you to notate and compose and you will subsequently learn as you write.
How is composing beneficial for your piano playing?