I designed my own store by myself a few years ago, and I can list a few things I did that helped a lot. One of them was checking how other stores in a similar niche were laid out and organized. I checked not only local stores and some of my direct competitors but also stores in nearby towns, and I looked for pictures of similar stores around the world. It’s hard to overstate how useful that was.
Building a well-designed shop is a real craft, as this website is run by a team of shopfitters London showcases. And the more you can learn from other people’s designs, the more issues you’ll be able to prevent when designing your own store. Good design will also prevent confusion and help your store look more organized, which can have a big impact on people’s first impressions of your store.
Another tip I have for you is to leave room for changes and additions. You’ll invariably realize that some tools and items are more or less important than you thought after running the store for six months. And you’ll want the room to make changes to reflect those realizations.