Do I exhibit excessive sclera show? (photos)

Emily, your question about having "scleral show" is a good one as in the photo your lower eyelid appears a bit pulled down. However it appears that your eye is slightly looking up which makes the lower lid look relatively retracted. In my opinion your eyelids have a beautiful shape and and attempts to change at this time would put you at risk of having an unnatural looking eyelid.

Based on your photo, you do have mild sclera show, however the way you take a photo may have influenced the appearance.  If you are looking up towards the camera (chin down position), it makes it look worse, while looking downwards into a camera (chin up position) makes it look better.See an Oculofacial plastic surgeon to fully evaluate your lids. Though fat grafting can sometimes subtly help lid retraction, there are more reliable techniques to help the lid position. 

You do appear sclera show. It is not necessarily a problem unless you don't like it in which case lower eyelid retraction surgery may be an option. Best to see an expert.

In the photos, you have your chin down which forces your eyes up. Doing that you manage to barely show any inferior sclera. So no, I do not think that you are exhibiting "too much" scleral show.

Yes, you do have a mild degree of scleral show.  This is often due to loss of volume from the upper cheeks and can be improved with fat grafting.