IMO, you have to go with the way your hair grows, the texture and the shape of your face.
I've watched far too many YouTube videos of hairdressers at work. The efforts some of them put into a cut, is remarkable. One Aussie (Adam Ciaccia) gives tutorials with models which I find interesting.
Another vlogger I watch is Houston TV newscaster Dominique Sache who 'takes' you with her to the beauty salon and hairdresser. Lots of tips on eyebrow tattooing, hair colour, clothes, make-up, packing for holidays. A 50+ mother of 1 in a blended family of 6, she does a weekly vlog (video blog) as does Patti Rockstar Mom (74 - Florida) Susan Miller, who shows hairstyles for thinning hair, make-up, clothes, wigs and lots more, all with an eye on her purse (money)
There is so much you can learn from YouTube videos.