Step 2: Mix It Up
Gather some measuring tools from your kitchen - all of these products are food safe, so clean them as normal when done.
Blend your ingredients, and adjust to taste. Sample it by rubbing a bit on your teeth with your finger, rather than tasting it outright. That will give you a better idea of what it's going to be like when you use it.
Combine ingredients until you get the flavor and viscosity that you prefer.