Ugin,
I have created a demo of how to use Tracer to create something similar to what you noted in your first referenced youtube video. It is not a very good demo at all but it shows how to do it. It is at:
For best results, the more points you provide using Tracer makes the outline more exact. Tracer usage is described in the Manual and is easy to use once you figure it out. If you have problems using it, just email here. Andrea is much more capable of using it than I am.
If you have problems using it let us know and let us know if it works for you. If you think it needs something else, please outline. gg/phyllis