Well it's not your "artwork", you didn't craft it and it's not exactly an artistic photo.
The critique option is availlable to premium membership owners who can request than other deviants give them advice(s) on how to improve their art whichever form it takes.
The option appears when you go on your deviations page you can read "The Artist has requested Critique on this Artwork". And you've requested it for pretty much all your stuff. Some of them being drawings (which can be considered as art and deserve critiques) but a huge part of your gallery is made of... photographs of store and props, which really haven't much to do with... well deviantART.