Bridesmaids dresses do not have to all be the same design. However, it is best to keep them in the same color family or style.
Make a list of everything you will need to bring with you on the big day. Gather everything in advance and put it in one spot so that you don't have to search for an essential item at the last minute.
Keep a binder or folder with images and ideas. This can be a physical binder or an online folder.