Come back to mohawkrocks.com to figure out how to put it up.
Whine on the forums when you cant do it.
Figure it out after 200 people explain it to you the same way it's explained 1000 times on the website but you were too stupid to figure it out yourself.
How can you cut a mohawk wrong dear - its just hair in the middle of your head. If you don't like the look of your new hawk, you'll have to grow it out, or learn to love it.
Seriously, its just shaved sides, there isnt much to mess up.
And I am pretty sure a hairdresser will have steadier and more experienced hands than your friends or you.
As for my recommendation, do it your self. A full fledged barber shop shaver is $20 and if you do it your self it feels more natural. To me at least my second one feels so much better than my first which was cut by a hair dresser. Plus it will be as thick as you want it to be. At first use the biggest size buffer, like 1 inch and buzz most of your hair and leave a good 2-3 inch strip. Then with the smallest head, a #1 fine tune it.