@Beth-Snider Hi Beth, I do not use Procreate so I can not comment on the sizing issues you were originally asking about. But I do have some input on the image itself since you asked for feedback on that as well.
For starters I think you did a wonderful job with the painterly skills, the blending, shading and colors are all fantastic.
But when I look at this young ladies face I do feel like there are a few things that are off in terms of the perspective/lighting.
Right now if you imagine that the shading of her face was removed - you can see that her nose/mouth etc are all very symmetrical down the center of the head shape.
But then once you added in that shadow/fill light on the one side of her face - it begins to imply that we can see a little bit more of that side as if her head was turned just a little bit This is also implied by the fact that we can see the arm to the glasses on that side of her face but not the other side.
That is all fine, but then the rest of her features of her face would no longer be in the center of that space - they should be slightly moved to the lighter side to give that illusion of her head being turned slightly. Right now it feels like her head is actually turned the other way and the glasses are backwards (the arm should be seen on the light side of her face).
Took me a while to figure out what was throwing me off, and I am not ever sure I explained this clearly but hopefully it helps.