Unless your friend is in the business of vinyl graphics - they will not know.
You have a wealth of free information here on this forum. Start reading and researching. Use the search function for any questions that you may have, and you will most likely find all of the answers you need - as they have been asked umpteen times already.
Just FYI, when you ask a question, you will get serious professional answers for serious professional results - we do not use toys and we do not view this as a hobby.