Texture can be the line quality of a design. With texture, lines and surfaces can be described as smooth and rough.
Texture is very important in the perception of surface quality which creates sensations and experiences. Physical Texture is the texture you can actually feel with your hand, while visual Texture is the illusion of physical texture, created with the materials used in the art piece.
For example, if there is a L shaped sketch and you dimension from the bottom of the L to just above the horizontal part, and then you dimension the vertical part from the end point of the last dimension you'd be okay. But, if you dimensioned both of those lengths and then the total length you would be over dimensioning the sketch.
Rachel would need to look at the statistics to the genre and areas the genre is most watched