Try it with all white TinyArt, you'll get the most accurate rendition of your subject using all white. With the rest of the white you have It will bounce the light around and that's what you see when you see people outdoors shooting and they have someone holding a giant white circle. It's to bounce more light where the shooter wants it.
Your colors will be more saturated and more true to the colors of what you're shooting. I can see where you're getting a few highlights from the light coming from the side but if you shoot the exact same scene using white and compare it may surprise you.
With the still life you're shooting it's hard for the viewer to know the precise coloring of the subject but for a potter he wants the viewer to see it as true to life as possible.
You can see the black background start to fade out? If you were doing that for a magazine you'd want that to be jet black. That's why it would need to be lit. It gets complicated. You did a good job for somebody working from home. Keep at it but try it with white and you'll see a big difference. If these were plants they would get very grey and you'd say, 'What happened!' I did it the same way as I did the watering can.