Small, long, thin lures like a pointer are hard to cast unless they have a built-in weight transfer system. Lots of times that is what is rattling.
So be prepared for you lure to be hard to cast for distance, unless you can come up with a silent weight transfer system. The Orbit 80 jerkbait did that with an internal magnet that slid on a cable between two steel plates, but doubt that is feasible to duplicate in a home shop.
But, if I were trying to make a copy, here's what I'd do.
I would take the lure, without hooks and split rings, and trace both the side profile and the shape looking down from the top onto a piece of paper or light cardboard.
Then use that to transfer the shapes to my rectangular stock.
I would cut my lip slot at this point. Cutting the lip slot while the blank is still rectangular is key.
I would cut out the profile on the band saw, retrace the shape from the top onto the blank, and hand sand/carve down to that.
Then further carving and hand sanding to taste, until I got the shape I liked.
Cutting the lip slot while the blank is still rectangular is key.
After you've shaped, add the lip and hook hangers. Seal the lure. Float test it with the split rings and trebles on it, and figure out how much ballast you need to add by hanging split shot onto the trebles until it sits right, starting at the front.
Getting a lure to duplicate the size, shape, and flotation of the Pointer isn't difficult.
Getting it to cast well, and have the same action in the water is what's hard.