Cheeks, neck and jawline need more work - by which I mean more graded shading Nose also points in slightly wrong direction (off to her left). Nose is also too short, and nostrils too small. The bun of hair will need a slight shadow so it looks like its on her neck (just a little too close to the foreground atm). I know my critiques aren't the nicest worded by I know you'll want to get this right if you're doing a tut of it.
Oh no, don't worry! Your comments are fine XD They're all totally valid points. I can't correct them though cause it's already been sealed Well... a couple can be updated, but most can't... Sorry It shouldn't matter too much for this tutorial though. I was mostly doing this for the process rather than the end result. I have about 6 scans of this in progress before the final image where I'll be detailing what I'm doing at each stage and why. The extra details shouldn't matter too much for the tut, but I'll see if I can do them anyways.