How do I edit instant messages I've sent in Skype?

Find the message you've sent that you want to edit.

Right click or tap and hold on your message.

Select Edit from the menu.

Note : For Android 4.0.4 - 5.1 users, tap and hold on the message, and then tap the Edit button.

In the chat window, make any changes to the message you would like.

Select the Send button, and the updated message will show in the conversation. Messages that have been edited will have a pencil next to them.