This is one of 3 posters made for a personal Star Wars themed birthday party for my brother and sister, the original artwork will be below, I used clone stamping and content-aware fill in photoshop to extend the artwork to the side and added the shave ice cup into the foreground and stylized it to blend in with the art work. As well as all of the text and text boxes. 

This is the Original work done by Lucas Troya, he deserves the credit  for this work as it is extremely impressive.

These are the other elements I used for the poster.