I want to create a 4x6 postcard which will include an imported image. When I try to print what I have created using Vistaprint I get a "Low Resolution" warning. I have tried importing the image into TLC at full resolution (which requires me to do a lot of scaling to get it to fit on the canvas) or resizing it first in Photoshop for 1.25x1.798 inches at 300 dpi (which requires some, but less, scaling to get the imported image to fit on the canvas). Any suggestions for fixing this problem would be appreciated. (I am running TLC v. 6.8.0 on a Mac).