Hi everyone! So, I have 2 questions about watercolor making, 1. I've always used gum arabic and honey for my binder. I think I should use glycerin. The question is can I use vegetable glycerin? 2. I've seen many people using syringe for filling the pan/store the left over paint. I'm curious how do you fill the syringe? Do you fill it from the back or from the tip? Thank you!