The key here is continuity. Sharing on certain days and hours and posts that communicating with each other are very important. Sharing images that are different from each other without any editing can create a very crowded image.
The most important thing to do for this is to determine a color scheme and to make photos and shares with edits in those tones. Even when people see a single post from you, you should try to be unique so that they understand that it belongs to your brand or you.