Pricing Advice for staring out

what’s the average paycheck for someone who’s starting?
My boss wants me to tell him how much I want to be raised. I work in a kitchen showroom and I am about to be upgraded to a designer. Until now I was a secretary/receptionist/was given small designing opportunities… Now I will be meeting with clients, creating plans, and helping them design their kitchens.

He knows that I took a design course and therefore wants to pay me as an official designer. Until now I was getting paid $800 a week for 27 hours… that’s around $30 per hour