Beginners Question

First off, I apologize if this is in the wrong forum. I looked but figured this would be the best place to ask. My question is, if I have a reference picture that I want to use to create my model from scratch, is there a way i can add “points” and when I’m finished adding my “points,” join them to make the faces, extrudes, etc.?

My reference image is on the left, with the “points” I’d like to begin with to the right:

Hopefully this gives a decent idea of what I’m trying to do - create a low poly model, then subdivide for details. Thanks for the help!

Look up Blender retopo. You can just draw lines and convert it to mesh.