As a note before I start. It’s true I don’t have a MW account. Where I got may experience with photographing items was when I use to sell model train stuff on ebay. I always (not almost always) got higher than normal selling prices. It was a combination of the pictures and the description. Sometimes I was shocked by how high the bidding went. So yes, I’ve had experience doing this.
Now, on to my comment
One thing I’m seeing that you need to be careful with is a busy background. Busy isn’t just lots of colors, it can be textures too. If your eyes flick from the main subject to your background and back, it’s too busy. If you aren’t sure have someone else look at it. When the background is somewhat distracting for a reason. it’s ok. Look at the Latka photo as an example. In this case the extra stuff is there for you to look at in order to generate more interest or excitement about the product.
Here’s a couple listed here that I see issues with
The Sheikah tower- the abrupt color change from black to white bisects two of the objects. It takes your eyes off the subject and keeps pulling them to the line between the black and the white.
The LED screen. Fits the subjec,t but is so bright that the lines in it make it so your eyes don’t know where to settle as they are brighter than the subject.
The vases with the brick walls in the background. The textures are distracting and again, you have a hard division distracting the eyes. In those cases blurring the background and the line between what they are sitting on and the background would make a huge difference.
Besides the other techniques listed in this thread, another “trick” is to use “leading lines”. You can use backgrounds, tables, other objects, shadows, and many other things that lead the eyes to the subject. And every time your eyes try to jump to something else, the lines draw them back to the subject. Lot’s of times this technique keeps the eyes focused right where you want them looking.
I’d like to send you to a site for this, but of the several I checked, the professional photographers use examples that are amateurish. I think they don’t want to give away the real tricks of the trade that set them apart as professionals.
Another note. One of the reasons photoboxes are used is they force your eyes to the subject. As mentioned in the other thread, you can use a box with 2 sides and a bottom or 3 sides and a bottom and drape a cloth over it. This allows you to use different colors for the background and you can even arrange the folds so they draw the eye to the subject. Photoboxes make the process simple, but that doesn’t mean they are always the best method. Mood is really hard to set in a box, so using lighting and placement with other ways to draw the eyes to the subject can give better result.