FGP = Funky Glue Putty Part 2

Draw the drying glue back to the center, picking up all the smaller pieces and stings of glue into a small blob.

Roll your index finger rounding out any irregularitys into a round ball.

Instead of a round motion with your index finger, switch to an up-and-down rolling motion making the ball into a cylinder shape.

Move to the outside ends and roll them into points.

Like anything else, you'll make a few before you get it right.

This FGP roll shown isn't long enough to go all the way around the Saturn V nozzle bell.

Here's an engine bell on my well-worn Dr. Zooch Saturn V.
These were make with the Fixit 2 part epoxy putty available from Apogee.

If I were to do it again, I'd probably go with the FGP. Both glue and 2 part epoxy work very well to make the tubine exhaust manifolds.