* Apply the masking fluid generously with brush or quill to dry areas not   to be painted 
* After drying it can be overpainted with water colour, airbrush,   gouache or dilluted acrylics
* Removeable with finger or soft eraser when dry
* Pre-test recommended to check the compatibility with paper
* Do not leave masking fluid for longer time on the paper
* Clean tools immediately after use with water