I love this app so easy and intuitive except - you can print pictures directly from iPhoto or from email on my iPad.
Using Epson iprint I would like to set the picture default paper size to be 8.5x11" so that I can print directly from iPhoto. This is similar the following Q&A but less complex.
How do I print a photo?
Do the following:
Connect your iPhone, iPad, or iPod touch to your wireless network
Open the app.
Tap the Photos icon, and then select the album that contains the photo you would like to print. Tap the photo to select it.
If your printer is selected, tap Print. If your product is not selected, tap , select your product, then tap Print.