I like the colouring and textures. The cropping really helps to enhance the frothy texture. The depth of field that softens the wooden bench adds a sort of warm, homely feeling to the image. It makes me think of a hot drink on a cold night. I think a border would really help to finish of the scene.
The chocolate dusting on top of the milk foam is a great subject. I wish the foam and chocolate were in better focus, the highly decorated cup is beautiful, but draws attention away from the subject, and the background is unremarkable but distracting for all the textural and tonal variations - it would work better if it were blurred. I do like how you composed the cup to the corner and not dead center.
The cup and the cappuccino look very nice and appealing. However; to my eyes, there is too much table in the picture and it isn't a good color to show off the cup. This would have been fabulous on a different color background and showing the whole cup.