Wonderful shot. You’ve accomplished two major goals with this photograph. Firstly, you’ve simplified it from an “object” standpoint, and secondly you’ve simplified it from a “color” standpoint.
You have effectively rid this photo of any boring, unnecessary or distracting element. I can emphasise how important this is. Great work.
From a composition standpoint you’ve done a very good job. The ring around the scissor handles has been allowed to sit nicely in the frame, yet you’ve managed to create an aesthetically pleasing information balance in your picture.
From a technical standpoint I think this shot is superb. However, I want to see you (more so than with just colors, and shapes), and play around with reflections. As you’ve mentioned in your post, the reflections in this shot provide a great enhancing element.
Try thinking about how you can take this a step further. What if you were positioned in such a way that your reflection would have been in the window that’s visible in the scissor handle reflection. What if someone else was there looking out the window? What if the window, and not the scissors were the focus of the picture (using the scissors to show the reflection)? Photographers love reflections. Most find them in puddles, mirrors and so forth. The fact that you found one in scissors means you should play around with this concept more!
Good luck and great work!