Looking great! As to both details and soft/sharp edges, it usually comes down to where you want to lead the viewer's eye. Areas that should be the center of attention benefit from higher contrast, details, and sharper edges, whereas areas further away from that help balance out the painting by having softer rendering and less details. In this example, the face (eyes & nose, more precisely) would be the highest point of focus overall, whereas areas further away get less defined. Another thing to look for is the transition area between light and dark as a point of detail. For example, the feather's texture could mostly be described at its light half-tone & terminator sections, while the shadow section could be simplified into less detail. This helps organize it into being less overwhelming with texture while still giving it the necessary definition.

Hey there! You've got good progress--defined structure, clear values, and a variety of hard and soft edges. I think something that can push your painting is continuing to build the light source, layering light values as it lands on his hat, forehead, nose, eyelid, and even some faint light bouncing into his eyes. It also helps continue the illusion of 3D form to use your brushstrokes in the direction of the plane you are describing, so for example, the light on his cheek could be painted in the diagonal, curving direction of the cheek itself. I think the combination of these two can really help describe the form of your subject matter with clarity and unity.

This looks really nice! Despite drawing a different angle as you pointed out, it still looks very believable and realistic--so props to you! Something I think can help you in your progress as you continue studying would be to pay attention to how you use edges. Often times, it's most helpful composition-wise to have a variety of soft and hard edges, with a conscious placement to lead the viewer's eye. Hard edges are often placed at areas of focus, with edges becomes more soft and less defined the less important they are in the drawing. This also correlates to the simplification of detail--as seen in the demo, less important areas like the shadows for the feather or the inside of the hat would be kept simple, while areas in light would have more detail. Hope this helps, keep up the good work :)

So Pristine, I'm Jealous. Great work. You've been doing this a little longer than myself.