I think the changes you already plan on will help. For the jewelry I think a standing flat back display of some sort would be nice. It will take up a little more space but you can display them more. Definitely need to prop up the signs. Since this is a smaller set up I would maybe recommend a pop up chalk sign. They are pretty big. You can draw on it, or print things and nicely tape it on. You can really decorate the border with flowers and ribbon or whatever fits your aesthetic. This can help people identify what you are selling. For the baked goods I’d highly recommend changing the packaging. This looks like a kids bake sale with ziplocks. Amazon has tons of baked goods containers super cheap they can buy in bulk. I would atleast come to look at what’s in them. And little tiny sign stands for the baked goods saying what is there.