Your pose and attention to the pajamas is wonderful! Very nicely lit. Very nice catchlights. Nice depth. This image only has 1 thing that is lacking. Contrast. Your colours seem a hair washed out. Otherwise, wonderfully done!
Wish I had those PJ's when I was young.......
A different background, other than grey, may have worked better as the outfit is grey and therefore blends a little (and gives a very grey shot). I like the yellow shoes tieing in with the yellow in the top. The cape seems a little noisy though