Great work! Overall they're looking great. Some tips for improvement: 1. Gesture. I think most of the pieces could use a little more movement. Especially Elvis. He seems a little stiff. 2. What do you want the viewer to see and how can you guide the eye there? You can use value contrast, varied edges, colors, etc. Look at portraits by Rembrandt. Notice how the face is always the most rendered and detailed. Some of his hands are fuzzy or just "implied". Don't make EVERYTHING important. 3. Brushwork. Your brushwork is great, but in some pieces it's the same everywhere. You want to treat different materials differently sometimes. You want skin to feel like skin. Fur to feel like fur. Hope that helps. Great work, keep it up!