> I would really love to find some good drawing books, online courses or other source material that structures the learning process in a way that can give some

> I would really love to find some good drawing books, online courses or other source material that structures the learning process in a way that can give some positive reinforcement That seems to be the problem with learning to draw from imagination - it's just very hard and slow process, and the positive reinforcement is stretched over months or years of training.