My advice (take it for what it's worth!)...
SAVE for the things you want.
There is a big temptation when you finally start making 'proper' money to go mad and upgrade to big mortgages and car payments... TRY to resist.
In an industry where incomes can bounce a great deal, often through very unexpected marketing swings, it's prudent to save for the things you want and avoid large 'monthly payments'.
Work your way up gradually.
My major goal was to be cash/asset positive. i.e. no mortage (in a good-sized house), no car payments, no credit card debt, no loans, and a decent cash-reserve/savings. I had 'nice' cars while going through this, but nothing really exotic/over the top. Not until I could afford them cash.
Believe me, buying your dream car with cash is a good feeling; especially when you have no other debt in the world. That kind of security really helps you sleep at night.
And with cars, they're often poor investments, so cover yourself and buy good examples in popular colours that are 3-5 years old with low mileage. This will dramatically reduce the depreciation.