Download the special characters app or install emoji (there are lots of other character apps but I use special characters)
Choose a character out of the app or choose an emoji
Click on the paper airplane in the top right corner or just copy it (click on image to see the airplane)
Go to settings
Scroll to general
Make sure shortcut is on
(Click on the image to see) scroll down to "add new shortcut"
Paste your emoji or character in the phrase slot
Add any word to be your "shortcut word" (I don't think numbers work)
(Once again click to view full image) then click save
Make sure it's there
Whenever you need to put the character or emoji just type the shortcut word and click space:D ◑０◐ lol enjoy!
If you want a certain tutorial then please comment:) ☻