The word "miniature" is derived from the word 'minimum' which does not really relate to just the size of the image but uses a red lead paint (which has a pigment or a glue solution) to bring out the different colors and illuminate the image or manuscript.
The details in the citadel miniature paintings differentiate them from small paintings. With the help of a magnifying glass, you will be able to see the fine brush strokes used to perform this art. The miniature painting attracts viewers to see the minute details designed.
Image Source: Google
There are various painting techniques which are visible under a magnifying glass such as:
Hatching, Cross Hatching, Contour Hatching
Though the Miniature Paintings contain every element of a larger picture like color composition, image clarity, and other special effects, what sets them apart are the fine brush strokes and the tiniest design details.
This form of art requires a high degree of expertise and takes years to practice and perfect. While working on miniature art, the artist must have absolute physical control over all his movements.
This is very important because any shaky movement can divert the brush stroke leading to spoiling the image. It is very important to have a good and tidy working space while doing a miniature painting. Color consistency, precision, and picture depth need to be in control.