I'll offer my twopenneth. First the bad points:
Background (wallpaper) is very distracting (much too sharp) and offers nothing to the image, perhaps if you had posed your wife further from the wall and used a wider aperture it would not be so offputting. Small white flower on the third RHS is one of the brightest parts of the image and draws the eye there after a while.
It is a pity that the dress has moved down a touch and exposed the mole on your wife's right side above the breast, once noticed I find it very hard not to keep looking at it, perhaps you could clone it out. I realise that it is a feature of you wife's anatomy, but in a glamour style context it is a little distracting. if the dress had been a little higher it would not have been an issue.
Now the good points:
I like the hint of the stocking top showing as it teases the mind.
You are a very lucky man to have an attractive wife who is willing to pose for you, and as your techniques improve I am sure you will produce some excellent shots together.