If you wish to add a bit of flair to your Twitter handle, then you can put either symbols or emojis on your name. To do this, proceed to the change display name instructions for either PC or mobile as detailed above. When you’re typing in your name, right-click if you’re using a PC. From the menu, choose Emoji, and pick the one that you want to use. If you’re using mobile, this is simpler, as there’s an emoji key right on the virtual keyboard. When you’re done, save as instructed above. Do note that this doesn’t apply to usernames. Only alphanumeric characters, except for underscores, can be used for usernames.