Hello,
I am a student and I have been painting murals and portraits on the side for some extra money and experience but I have no idea how much to charge for this. I don't have a degree in art, it is just a hobby I love. Any advice? I do a good job and they are satisfied, I wonder if I should be charging more. So far, I have done vines and fruit in kitchens, a long rose and leaf border in a bathroom, and clouds on a ceiling.

Please help, advice would be greatly appreciated.