It’s an ok image, but for my taste would prefer chin to be raised for longest appearing neck, and to rotate head to model right a bit, this would have body and head in same orientation.
Could also tighten top with some clips in back that would eliminate the material bulge by left armpit
This pose looks stiff
Dress wrinkled from waist down, thread hanging off lower hem [Models left]
Less head tilt
Seated position is making your upper legs appear short
Raise your chin; you have lost your neck
Think your hips should be on an angle to camera
Wish hands were not at sides of head
Head and body facing same direction
Hair could be smoother, with out the dark roots
Of your photos this comes across as classic elegance
Model and pose wise this is another good effort on your part
Notice how long your neck appears
You possess a fantastic look, wish you well