Japan is a nation that is obsessed with looks, and I don't mean that to be disparaging... Time Asia ran a piece last year concerning how males in Asia have no problem whatsoever obsessing over their looks whereas in the United States that sort of thing is seen as effeminate (or if you listen to sooooh last year terminology, metrosexuality)...
There are many magazines (style guides), that often have example hair cuts, showing both the front the side and the back... One magazine in particular for men is called Choki Choki (Choki are scissors btw...)...
The website for this magazine is here:
株式会社内外出版社
Even if your Japanese is sketchy, you should be able to show someone a picture and tell them what you like... It helps sometimes if you go with someone who is fluent so that they can translate for you... The bonus is that you often get a back and neck massage as well!
I recommend some of the more expensive, but arguably better salons located in Shibuya.... but your local prefecture will undoubtedly have a salon or two...
At the very least you should learn some words to communicate that yes you like how its going so far... I'm sorry I don't have a vocab list for you, I've just awoke and my brain is spaced... and I honestly remember just winging it, saying that I understood etc, how long I've been in Japan, good or bad, etcetera...
I love Japanese hairstyles for men, and as soon as I grow my hair back out (I used to cut my own hair), I'm going to a local salon that specializes in Asian men & womens hair styles... oddly enough, right on my block.
Good luck.