If I have an image that I like, but the crop doesn't seem obvious, I usually start as @brett8883 mentions and use established rules of composition, but I won't hesitate to deviate from those norms if my eyes tell me otherwise.
I can see your...
Thank you, yes 5 has plenty of internal storage, what I meant was I left home my SD card for my stills camera I wanted to use to photograph, already made adjustments so that does not repeat. Glad I had the drone with me to save the day.