Vcarve a line (no offset) onto a rounded 3d?

[WillAdams (William Adams (Carbide 3D))]

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Svg overlaying grayscale?

So I am super new to trying this 3D stuff. Learning a lot but also creating lots of questions my brain can’t figure out on my own. Hoping someone can help me out. I have a good grayscale image I can import and cuts nicely with a nice wave. I would like to either overlay an svg file and have that carve follow the contour of the grayscale, or can I import a grayscale/stl file and be able to pick specific vectors to carve. I would like to be able to carve the wave, paint, that and then carve o…