Hello! This is just a simple tutorial for that one trick. (It doesn't have a true name yet.)
This trick works with any blue drawing space. Let's use the first space in Claire 1 as an example as it is also the first use of it in a run.
In the blue space, you want to draw near the bottom left corner, and when you draw make sure to always hold left click down until the end.
First part of the drawing you want to make is a line at the bottom left for you to jump on, around this size, give or take a tiny bit.
Now, while holding down left click, jump on that line, and once you do, make sure to recreate this shape.
(You can also draw the little spike at the right before jumping onto the line)
Release your left click and just start jumping, all the way to the end trigger, this is used in both Claire 1 and Claire 2.
Holding down left click for blue drawings can also be used in other levels, it has a pretty neat use midway through Chase and at the end of Mike 1.