Download of the application directory the most recent version Gboard (links at end of article). If you already have this keyboard, then check to see if it needs updating.
Open any messenger and start typing a message. Press and hold on the keypad comma. This action will bring up the panel sticker.
Click on the rightmost icon, which depicts a face of many colors.
You will be prompted to create a mini-avatars. Click on the button "Create"
Take a picture of your face. The program will analyze it and will offer you an avatar. You can fine-tune its appearance in a special editor.
When you follow these steps, you will be in an exclusive set of keyboard stickers that can be used in any application for text messaging.