What summer promotions are we offering?

[Nails Unveiled]

Hi, I am now entering my second year of being a mobile nail tech and now I've had plenty practice and been working with a comfortable amount of clients, I'd like to up the game a bit and bring in more new customers. I'm also working on improving nail art so thought of offering 2 nails free nail art or something so that I can also build up a portfolio of designs?
So what are we all offering this summer and what are we finding are the most popular deals?