I am having a fight with a donut. I am on Part 4 Level 1, and I'm trying to extrude the drips from the icing.
Earlier, I wasn't able to get anything besides a rectangle to appear (no roundness, despite what was selected under proportional editing), but after a couple hours of messing around it seems like the issue is that the extrusion is freely piercing the plane. It is not snapping to the surface, but rather, it can swing freely inside and outside. That makes it really hard to get a good drip.
Here's a link to a video for visualization for what I am talking about: https://youtu.be/BgAEUB91apY
This is my first time with Blender, so I'm sure I'm missing something quite simple, but I'm totally stumped. Halp?