There are a few things you need before starting to make a collage in Photoshop. First, you will need some pictures to use as your basis. Second, you will need to create a basic structure for your collage. Finally, you will need to add your own pictures and text to make it unique. To start, take the first picture and place it at the bottom of your collage. Next, take the next picture and place it in the middle of your collage. Finally, take the last picture and place it at the top of your collage. Now that you have your basic structure for your collage, it is time to add your own pictures and text! To do this, select all of the pictures in your collage and press Ctrl+A (or Cmd+A on Mac). Then, select all of the text in your collage and press Ctrl+T (or Cmd+T on Mac). Now that everything is selected, click on the Edit button in the top left corner of Photoshop. Now that Photoshop has opened up its editing window, you can start adding your own pictures and text! To add a new picture or text, click on the Add button in the top left corner of Photoshop. Then, choose a picture or text from among those that have been selected by Photoshop. Once you have chosen a picture or text for yourself, click on OK to add it to your collage.