Asher is going to be an inventor.  This picture is characteristic of most drawings that Asher does.  There is a lot of detail.  Spend some time with the picture.  Note the caption, which is interpreted as follows:

It's not just any engine.  It is the Forever Engine.  And also, my Mom came over to see what I was drawing, and I just started, and she said, "Wow, that's a great job!" and I only had like a piece of the wheel on.