If you want to end up with a collage like the one in the background start by getting keynote.
Press on the plus sign to make a new presentation .
Press on create presentation.
Choose your theme.
Press the plus sign in a box to make a new slide.
Choose the blank slide so it is easier to see the pictures
Press on the on the plus sign on the top right corner.
Press on camera roll
Keep adding pictures
Still adding pictures
Screen shot the picture
Crop it in the camera app
Press on the arrow coming out of the box
Press on set both . And there you go😝 If you liked it than please coment😊