Here's a quick sketch of my second child waiting for food at a restaurant.

First, I drew the walls and floor. I didn't fully draw the floor because I was going to draw the desk below.

Next, I drew the chair at the far desk, but I made a mistake in drawing the cushion. 

I should cover it with the desk.

I covered it with the desk. I intentionally left the desk legs out because I thought it would make the drawing look too complicated.

I also drew the chair on the other side.

Next, I drew the desk near the near side. 

.,,,,,,

Next, I drew a pretty child, and then I added a bowl, and it was done.

sketch of my second child waiting for food