Napalm

This is a project I started a few days ago, I took inspiration from Alpengeist and Flight Deck at Carrowinds. I am having a little bit of a problem with the shaping of the inversions, I am looking for tips or tricks on how to improve the shaping, I know what they are supposed to look like, but, cannot seem to get it right. Any constructive feedback is always welcome.

Image Insert:

67.27 KB