A versatile brush that creates a solid cartoon-like outline to the shape drawn. It can be used to draw transparent steam, magic, or clouds with an outline into any desired shape.
The default brush is transparent, but adding opacity will create a solid color form. Drag the tip around while holding the button and you can create a wider shape, it will taper at the end if you want a thinner edge. You can also tap the brush to draw a smaller puff of steam.
Examples of the pen in action:

(In order: 1. Tap, 2. Line, 3. Wiggle then line, 4. Zigzag then line, 5. Tight swirl then line, and 6. Wide swirl then line)
To change the properties of the pen:

If you'd like to change the Pen Tip to a different shape:(Adjust Opacity to make a solid form, adjust Thickness to make a wider/taller shape, adjust Watercolor Edge to change the edge width, and adjust the Brush Size minimum value to change the width of the tapered edge.)

Please drag and swap the included Brush Pen Tips in the settings; simply drag the shape you want to the first slot.
(I'd like to make the tips able to be randomized but I haven't figured out how to do so yet; I will update this pen if I ever can find how to do so!)
Note: The original shape was drawn with a textured pen which is visible on the outside edge. The interior has a soft edge because this brush uses a watercolor edge to create the opacity. The difference is unnoticeable on a large image resized but makes the interior look "softer".