Pictures on websites are so important. Show people your products, your store, your staff. Let people really see what you are about. Try to get action shots, pictures with people; It will help keep people interested.
The great thing about using Squarespace is the many photo gallery options. You can do slide shows, grids and more. Some of the galleries have lightbox features, where it will open up an enlarged picture in another window. You just need to take some time and have fun with it!