i agree with xwsx except i will have to add a few things and disagree with him on one thing

ws, its true that u dont want ur render to cover up too much of the sig but i think scrufflecakes did it perfectly. his did not cover up too much, it was very good.

make ur text not cover the car, move it over to a spot on ur bg

add a couple more effects and maybe a stock

well thats my 2 cents hope u learned scrufflezz