What is a series of 3 photos called?
A series is a group of photographs presented on the same theme with each photo telling a different part of the story. It is important that the style of editing and colour schemes are consistent throughout, or your series might not look like a series at all. The images should be a similar size, and it is also good to have some negative space at the bottom left of each photo to give it a more balanced feel.
What are you going to do with your set?
When creating a series it is important to consider how you are going to present them – would you want to show them side by side, or in a grid? Or would you prefer to make them into a collage? It is also a good idea to consider what sort of message you are trying to convey, and how you are going to highlight that. You may also wish to use a model in your series, or have different people in each photo, depending on what you are trying to achieve.