take a look at this thread: in the middle of the second page it has a demo of how to draw a path and have an object follow it.
https://www.construct.net/en/forum/construct-3/general-discussion-7/collection-demo-projects-149701/page-2
Thank you so much for the answer. It really helped.
Now, are there any ideas on how I can compare the shape the player draws to a predefined shape I'm showing to him? I will work on this today and try to figure it out but any help, again, would be much appreciated. :D