Mask out human ears. Add cat ears. Adjust hue and saturation to match face tone.
Colour lips a purplish hue. Change nose shape using liquify. Paint in some new highlights and shadows on and around nose.
White sparkles added to face and duplicated three times.
1st layer was blurred to create a subtle glow.
2nd layer was blended on overlay.
3rd layer was left normal but the sparkles were selected, the selection contracted 2 pixels and the outside of the selection deleted to create a subtle highlight in the center of the larger dots.
Hair shadows added to face and neck, beads added to hair. Beads recolored.
Black vignette added around bust portrait. Thin blue border added. Black frame added.
Gradient lighting added.
Text added to poster, layer styles added to text. Blue border adjusted around the text.