Answer:
positioning and overlapping
Explanation:
According to my research on artistic techniques, I can say that based on the information provided within the question Mewar uses two basic visual cues for implying depth on a flat surface which are positioning and overlapping. These techniques help add a value of depth or 3D onto a painting. You can see the painting below, and you can notice how the rifle-men are placed farther out and overlapping each other to make it seem as though they are 3-dimensional and standing on the ground farther from the musicians.
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