From personal experience. It's all to do with what tastes good to you. I've mixed some of my DIY that I've thrown away. and I've bought some premium juice that I've given away. Find recipes online that suite your tastes and buy what you need and go for it. Good luck
Or go to a signage shop and ask them to whip up a little design and print a few pages. I would think you would still write on it though as your recipes will change. unless you vape the same juices all the time. which would work then,