Karen,
The cruise one is 6.5 x 6.5. I can make the design bigger if you want but the boat graphic is the biggest it will get (without making it grainy). I could make background bigger if you wish. Let me know. Also, I was working on this design and it should be perfect for Papa as well. Let me know if you'd like any changes.
There is a sticky at the top that explains a lot of tips but simply right click on image, save to your computer and print out on iron ons according to directions. White shirt = Light transfer and Dark transfer for the rest unless you want all white portions of design to be the color of the shirt. If you need any additional help with this, feel free to pm me.