When you are intimidated by art materials you’ve never used before and aren’t quite sure how to use them, draw a 3×5 rectangle in your journal and experiment with the new material in just that spot. When you do this, you’re not afraid of screwing up a whole page.
I used fluid medium with my acrylics for the first time today. I have to say, I like that it because it helps me get the look of watercolors without bleeding through the thin paper of my moleskine. Also, adding a few drops of it to my paint means I can use less paint. Which means I don’t feel so guilty about buying the stuff that’s $8 a tube instead of just buying tons of the cheap craft paint.