I think that the face of the figure is the only finished area of the painting. The rest of the figure would benefit greatly from the amount of care that was taken with the face. The anatomy of the left arm tucked under the right could use some work as well as the raised right hand. The extra arms to the side are good although the right hand breaking the format interferes with the flow of the overall painting. I would suggest pulling it in so that all the fingers are visible and some negative space exists between it and the border.
The clothing should also be reworked. I would find or photograph some reference of this type of dress and work it in. Finally, I would add some more tonal gradation to the helmet, perhaps even giving it a chrome like surface. The flatness that the helmet has now really takes away from the beauty of the face.
This piece has a lot of potential and I think with some reworking it could come together really nice. I hope I was helpful!