I bought some professional clippers way back, when times were hard, and a Growster-Chop would just may be fashionable...
I managed my own from the front, but failed from the back of course!
But, Mrs Growster had a good 'seeing-too', (no, a haircut), and we agreed that I would just slice the layers until she felt happy with the result!
Actually, it worked out pretty well, and now I know all about her garden, her grandchildren and where she went for her holidays!
:0~