A study of 6 ... but there is only 4

The catch lights in the 1st and last pics are really good.
In the 1st pic I would look at cloning out that white coat or whatever it is on the left and the bottle or ornament on the bottom right. Or you could try cropping to portrait to get rid of the distractions.
In the 2nd and 3rd I am finding the window + frame distracting.
Subject is great, in focus, background is nicely OOF, overall a great concept I think !