1. In the top picture, Daffy's left foot is in plain view. In the bottom picture, it's behind a shrub.
2. Top: 3 ducks swimming in a nearby lake. Bottom: 4 ducks.
3. Top: Flower with pedal. Bottom: Flower with simple circle shape.
4. Top: Entire picture is done in pencil. Bottom: Entire picture is done in pen.
5. Top: Daffy has 3 visible fingers on his right hand. Bottom: Only two are visible.
6. Top: Grass lump below Daffy's foot. Bottom: No grass lump.
7. Different cloud formations in both pics.
8. The sun is sending out different numbers of rays in both pics.