Pick from:
-- The icon for the sticker tray is the square smiley face in the top right, and can be opened after taking or selecting a picture to add to your story. Select the emoji slider.
-- Note that many photo editing apps will allow you to capture a certain number of stickers to your photo. It's a good idea to choose a sticker that was purchased or is printed in your pictures.
-- The sticker tray may be slightly obstructed by icons on the screen. This may be a bit of a hassle, depending on the size of the sticker, but it will give you several options to choose from : For a selfie (for a very easy option.
-- If you want to make a sticker, navigate to the sticker tray and use the paint tool that came with your camera. If you haven't installed sticker trays already, take the ones that came with your smart phone camera at this point.Choose from options above and answer: What most naturally follows?

How to use the emoji slider on instagram
Open the camera in the top left.
The camera screen that opens allows you to either take a picture or select one from your gallery.
Open the sticker tray.
Answer:
The icon for the sticker tray is the square smiley face in the top right, and can be opened after taking or selecting a picture to add to your story. Select the emoji slider.