Have we finished the repetitious tasks yet? Don't you wish!

We could place the fisheye-distorted bitmap images directly over the checkered panel and they would probably match up pretty well. But that would be too easy.

Using the Ellipse Tool, create a 100 x 100 pixel circle (with no outline). Make a duplicate and center the duplicate circle over the first bitmap. Once again, use Combine Shapes > Intersect Shapes to remove the portion of the bitmap outside the circle. Repeat this step until you have eight circle-trimmed bitmaps. Try to keep the circles in the correct order.

If you haven't already done so, save your work and take an eye break. (One of us has to an it might as well be you. My eyesight went years ago).