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Preveina explained how she drew an image on a $4 \times 4$ square grid and then distorted the grid to distort her image. Here is her distorted grid:

distorted grid
Preveina noted that the process of creating a grid for a piece of anamorphic art uses similar mathematical skills to the process of enlarging a shape.

Timothy sent us a picture he created using the techniques of anamorphosis, although he did not send us an explanation of how he created his image, or which position it should be viewed from in order to see it correctly. Here is his picture:
anamorphic picture