Digital Painting

Below is the step-by-step process when painting the background.

First of all, the perspective grid was created and a sketchy outline was drawn

In a trial painting, I planned to paint basic color first and then enhance the edges, shading and details,
but I realized that this process is very inefficient as it takes too much time to finish a single drawing.

On a second trial, I first draw a vector shape using pen tool to define the area.

Highlights and shadings are then painted in a layer clipped to the vector shape.

After finish painting the classroom, I decided to take a few more hours to add in more details.

A few bags and books were added in the painting. Almost time to start the next background.

Lastly, to enhance the overall mood and feel, a color balance adjustment layer has been added,
adding some blue color on the shadow and yellow color on the highlight.

The same digital painting workflow has been used in most of the scenes in the video. The first painting took me about two to three days, however as I get used to the technique, it only took me three to four hours to finish a background painting.