Is drawing forbidden, and is it obligatory to dispose of old drawings that include images of people and birds, even though they are personal mementos and not hung on walls?

It is forbidden to draw animate beings that are complete in creation, and their pictures must be removed even if they are not hung. It is not permissible to keep them except if they are desecrated. As for pictures of animate beings that are incomplete in creation with a deficiency that life is impossible without, they are not considered among what is forbidden.