This is my first time of a painting study and I'm not sure I've done what was required from me.
Time: 1 hour 30 minutes
All the 8 principles are present in this picture. Most important seem to be economy, emphasis and balance.
Cassatt emphasizes baby head and hands. Mother is not so important here, we cannot even see her face.
Clothing and background are very simplified. Hair also - in some places only outline is shown.
And.. I guess, the balance is supported by baby's eyes direction.