Steps to use carapace grid. I hope this helps. Keeping the width and height of all images and all viewports the same is important for this to work.
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Original wall paper image
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In Photoshop: Image with carapace grid pasted into a multiply layer above
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Using carapace grid to align photoshop vanishing point filter grid In Photoshop to paint a 3d cube. Brightly color cube makes alignment easier.
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Rhino cube to align with image cube.
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Matched cubes. By eye or use perspective match command or both.
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original backplate as wallpaper in saved named view with rhino objects