Technically, this shows exceptional use of depth of field. Throwing the background out of focus while maintaining sharpness in the face draws the eye immediately to the subject, as does the lighting (bounce light?) of the face.
Artistically, the frazzled hair to the right of the face, backlit to the point that it is almost completely "blown out", also begs attention, to the point that some might consider that it competes with what might be perceived to be the actual subject (the face). But linked with the delightful expression of the model and the more controlled pastoral tresses to the left of her face, I see a measure of conflict (orderliness vs. confusion, calmness vs. agitation), with the model at the apex, a sort of "which way should I turn, left or right, good or bad?"
The only suggestion I might offer is to crop a bit tighter vertically, excluding approximately 20% (1/5th) on each side of the image, and bring the lower frame up as necessary for composition.
What an amazing work this is ... At first I thought that she is drawn by hand because of her captivating look . The light falls perfectly on her and the reflection created through her eyes reminds me a lot of anime and manga creations . It's like she is telling a different story through her eyes . Velvet looking mouth and hair like gold threads . The model did a great job , she looks like she is inhaling and it gives the impression of bursting into tears . Many powerful feelings could be translated . I also find interesting by the focus . It could be her looking at her other half and the whole world seems blury and not important . But just him .... I could continue for hours . But I feel like I should rap this up . Overall a great shot !