Will your insurance cover you if something happens?
Having worked in insurance for over 20 years, here are my 2 cents:
1) Liability coverage would be denied due to a business use of a personal vehicle (unless you have a business policy).
2) If the wrapping gets damaged, there would be no coverage under your car insurance policy as that is an after market addition to your vehicle. You could buy coverage for it if you had a business policy.
And now a classic disclaimer: talk to your insurance agent regarding your policy specifics.