Any help cutting some curves into this model

[harryfreeland]

Hi guys, I have been trying to place some nice curves into this model but can’t work out how to do it well. Any help would be massively appreciated. I hope these photos can help describe the curves I’m looking for! Thank you!

curve.skp (150.2 KB)

[RLGL]

This page on the SketchUp YouTube channel should give some insight and ideas:
Intersect Faces

[jean_lemire_1]

Click in sequence on the scenes tabs of this SU file for ideas and a question.

curve - Questions.skp (229.8 KB)