First time making a signature [Help]

Okay, so basically, I tried to make a basic signature for sythe.
Here it is:


I made the "Life" part in cooltext and then I went over to pixlr to add the "Vouches" part. Now, I need to add the skype logo to the top right portion of the signature with my skype "LifeSythe". How do I add the skype logo on top of the signature while keeping the transparency? Sorry if this is a very nooby question but I've never done anything like this before. Thanks in advance.

 

Google images -> Search Tools -> Color -> Transparent

Search Skype Logo and you'll have one transparent. Save as the picture. After that, you can just add it on top of your signature with text and it will keep its transparency.