Just hold the mouse down and write. Slower is better! If you write a lot, it will eventually run out of glitter and need to start over. (I just switched it to start with fall colors).
@SunnyDays- made a glitter tutorial and it inspired me to make this glitter pen project. Programming and pen idea are mine. I wish I could have figured out how to make the base color change in sync, but I couldn't get it worked out. It changed at the wrong rate. So I left it purple. `\_(-_-)_/`