>>286766OP, the easiest way to get a feel for composition is to look at the art of others, pay the most attention to values, that is light and shadow, and its placement. Composition usually relies on lights and darks and the play of large versus small, as well as overall balance of colour and 'weight'. Its a mouth full but, heres my attempt at resolving your picture.
For me, the easiest way to resolve composition is to play with light and shadow, until it 'feels right'.