I finally found a masking fluid marker that works for me! I am terrible with masking fluid (ruining tools, tearing paper) and so when I found this new pump marker tool, I just had to try it. This is a quick and easy test using an oak leaf as the subject.

Tools used:
140lb cold press watercolor paper
#8 Princeton Heritage synthetic watercolor brush
Watercolor tubes in Pthalo blue, quinacridone gold, and pyrrol red
Mixing wells
paper towel
rubber (gum) eraser
Molotow masking fluid pump marker