Ok, think of this as apprentice work.
Time and experience will be your friend, ie. Yea I built...blah,,,blah.....
Wage will increase in time, cut your teeth properly.
FIT the part. Esp. in this world now, image is everything, sometimes tooooo much, oh well.
If you are one of those computer gurus (nobody knows what your doing, its PFM to the customer) you can afford to "look" eccentric, (no offense anyone) other wise, maybe a hair cut is in order.
Once you have established yourself there will more flexibility in image building, in some cases being more exotic can enhance customer count.
I mean look at BRAAP and JHONC!! Good gracious!!!))
Your 18, intelligent, organized, patience and gaining experienced. But alas, you are 18.
At 30 or so you will be strangely surprised how much growth can take place in that amount of time, esp during early to mid/late twenties!
You may find you don't care to work on cars as much as you thought you would and maybe like being a supervisor at McDonald!!
Ethier way, I would be surprised if you were not successful in life, just don't get some girl pregnent!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! (Not saying that this will cause failure, just WOW talk about a change in lifestyle!) I was married before bringing in my frist into the world, around age 30.