I think you could sell the tie quite easily with that photo – is it for sale? 🙂 I like how the background goes really well with the subject, but stays very much the background. Also, +1 on the 1:1 aspect ratio. My only comments would be that the two sleeves are not identical (you can see the shirt only on the right arm) and that the left thumbnail needs a bit of scrubbing/manicure to make it perfect.
Maybe reducing the highlights a bit? It probably won’t really help the blown portion of the thumb of the right hand, but I think that it will give the colored lines on the tie more texture, especially those on the top.
I’m not exactly a fan of the intensely saturated look (in the hands especially). Makes me not exactly trust how the picture represents the color of the tie. Nice composition though. Love the high-contrast look as it matches the ritzy style.