New to studio work, what do you think?

Nice photo, but the look on the model's face ruins it.

On that one photo? Good - the lighting is nice & soft (presumably what you wanted?). The b/g is grey - but again is that the look you were going for? White balance again seems fine.

You see, there is no right or wrong way to light - the thing is - did you capture what you wanted to?

In terms of framing - I would get rid of the grey space to the right of the model, so she is not so central. The grey in front of her provides some negative space.

You might just want to sharpen the eyes in post - the image looks a tad soft to me.

I see you were in multi-segment metering mode - which has given good results. I tend to use spot metering almost exclusively - it's good for getting the correct metering on the correct place (ie skin tones).

Edit: Just out of curiosity - why the switch from Nikon to Canon?