You don't need to post a pre-zoomed version, Pixelation has a zoom tool. Click to zoom in, ctrl+click to zoom out.
I think this is a very solid start! I have mainly minor nitpicks:
- The shoulder has jaggies, and the white area below the shoulder is conspicuously missing AA.
- I like how most of the face is in shadow, but it seems like the nose shouldn't have that highlight on it, while the cheek should have more light.
- The shape of the sideburn (not sure what to call it) is jagged and feels a bit tentative, I think some smoother, swooshier curves would look better. The shading/AA on it also hug the lines, creating banding.
- The AA on the light part of the uppermost hair spike and the top of the head uses too dark a colour and just makes the outline look thick.
