Character not appearing in Drawing view?

Following along with this tutorial

When I click on drawing panel there’s nothing but a white screen there and no minion.

The art may be positioned off screen out of view for the Drawing view while it still can be seen by the camera in Camera view.

Can you try zooming out to see whether it shows up?

Indeed, the drawing view has an extreme zoom. Shift+M to recentre the frame at 100% zoom might do the trick.