How can you combine relief (y axis) with a form cutout (x axis) in Grasshopper

Hello all,

New to the forum and new to grasshopper.

I am looking to combine two form types into one. I have an extruded half tone image, created in Rhino. This basically creates segments that combine to create a face and image. On the face of that extrusion, I want to combine that extrusion with a relief of a wave pattern. I found a clumsy way in rhino but am looking for a parametric solution so I can play around with the amplitude of the relief.

This is the front extruded form of the half tone image


detail

which i want to Combine with this form

Right now I am using “flow onto surface” in Rhino using the half tone extruded image, layed over “image sampler” morphed surface, but it seems clumsy.

HandsFlowerreliefWireframe2|666x500
Any ideas would be greatly appreciated.
Thanks