I have a drawing, you can see there is sketch 5.

I'm preparing sketch 5 for swept surface operation, I would like to get an option for either tangency or curvature relation, so I need a sixth sketch on the bottom (part) coincident with sketch 5 at the bottom.

Can anyone help me project a curve onto front plane so I can get a good transition for this next sweep?

Please explain, so I can do this on my own next time.

Thanks