This is a still life image of antlers in a vase sitting on a chair. It is an ink and charcoal drawing done by hand.
This was an art study of lines interweaving between vertical lines. It is an optical illusion causing the viewer to see yellow lines in the blank space of the green lines. It is an abstract piece.
Figure vs Ground is an art study attempt at having no negative space. Every part of the image is occupied by a subject.