Unfortunately, I don't have this world any more! However, producing pixel art is easy :)
-Type in to Google the character you want to make and put the word 'sprite' at the end of it.
-Save the picture to your computer and then click on it and zoom in. You'll see it's all pixels now.
-Then, all you have to do is build in into Minecraft following the colours :)

Nope, I use Grids