Actually the middle two help give the lead and closing shots some contrast and weight.

The first one, has class. A little contrast of light color but that adds to the Anise I think. The background is just a little bit too out of focus for comfort. It's one thing to show a tiny bit of banana if that means people SEE a banana...but the warm colored (cutting board?) in the background doesn't tell you what it is and creates a question that distracts from the scene.

Now, for the last one. The Cookie Taste Seller of the Week!

You got enough light, low angle and fill on the cookies to bring out color texture, and by implication, taste. You got nice color to the table and decorations, NICE. Sold. Salavating as we type...

But the milk was just not there. No impression of nice cold fresh milk (need sharp clean white milk color) (plus sweat or dribbles, fingerprints on the glass) waiting to ring a lip (soggy napkin, or delicately rumpled one if you prefer...). No crumbs (or chomped on cookies on the tablecloth!) to suggest the cookies could be nibbled gobbled and washed
down. None missing on the plate... EYEEEEEE, You might actually be saving the things for...oh NO!, Christmas!

sigh.

A few late comments. First picture- I agree, the handle of the sifter should be in the picture. You could cut more of the basket out on the right if you wanted to. The shot might have been more interesting in landscape rather than portrait orientation, with less empty space on the bottom. The "chocolate bar" should have been more prominently displayed, as it's the most unusual item.

With the grater and cheese, it might have been more interesting if shot at a lower angle (losing some of the wood's texture), but with the wedge of cheese sticking up higher into the dark background.

In the shot into the oven, it would have been nice to get a little light into the back of the oven. It just disappears into the black, but the interior of ovens usually has texture and color of its own, which is missing here. Well, maybe you clean your oven better than we do.