Hi Steven, the size of the buttons and image placement is currently locked. IO will make note of this request for future updates. In the mean-time, you could just remove the image and give it a background color so it would be more visually appealing.
Possible to move text above the image on the quick sell buttons? We have items that very similar and the image is really small. Just updated to version 1.8 running Windows 10 on a 19" screen. Thank you Steven