Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use stickers on apple messages [title] Open the messages app. [step] It looks like a white talk bubble on a green background. [title] Tap on the " new message " icon.

Ending1: [step] It looks like a pencil writing on a square and is located at the top-right corner of the screen. [substeps] The app might require you to fill in the " to: " field before proceeding. Ending2: [step] It's the icon of a person's head inside a blue circle at the top-left corner of the screen. [title] Select your message from the drop-down menu. Ending3: [step] It looks like a heart inside a white circle. [title] Type in the message you'd like to use. Ending4: [step] It's the outline of a person. [title] Tap the circle labelled " first conversation " at the top.

Answer format: ending1/ending2/ending3/ending4