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Great job. I actually like the rectangular shelf better.
@CBG Lens choice and rectangle ratio are all you need to accomplish this. Lens choice first. A 50mm to 70mm equivalent. There is little distortion at this focal length. Wider lenses will distort ellipses. Longer lensers will flatten. Set the camera mounted on a tripod at the desired eye level. Newer cameras give the option of 2 by 3 , 3 by 4 or square viewfinder. The RAW file will be in desired ratio. Finish canvas size.24 x 36 is 2 x 3 ratio. 30 x 40 or 9 x 12 are both 3 x 4 by ratio. Then scaling to a printable size in photoshop or affinity. Make print to a scale where you can use the proportional divider tool to scale to canvas.
I think you did a fantastic job on this. There are a couple minor tweaks to the ellipses on the two left objects, nothing major. I like the way you did the worn and dusty wood. Have you considered painting directly from life? You would avoid the distortion of the camera that way.