What happened on the day I realized I could not draw? It happens to almost everyone. The transformation of the paper place for an experience into paper thing that is good or bad. Shapes divided into pretty or ugly and the ugly shapes are pushed away into a place on the otherside of thought. To keep them there some of us had to stop drawing completely. Or we had to learn how to draw in an organized way that others could recognize and say yes to.
YES that is a nice drawing. So you have not wasted time or paper.
Keep drawing and if you are lucky and you can remember what drawing used to be to you. You may be able to find your way back to the place where the shapes are happening.