As a nail tech looking for some part time work I've received great feedback by providing the hiring manager with my Instagram (nails only) page during the initial contact when inquiring about the job posting by email. It saves you having to print etc and allows the manager to really zoom in on your work. It also shows a basic ability to market yourself which will put you above other candidates that dont show that and prove you have the tech skills needed to attract clients. Then you just have to prove you have the nail skills to keep them! Good luck with your search.