Many printing problems you'll experience will be specific to your particular printer and setup, so read your printer manual carefully and be sure to test before printing at the highest quality on expensive paper.
Prints Don't Appear Correctly on the Paper
You may have trouble getting prints to show in exactly the right location on the paper. Try these solutions to the problem:
Photos Print at Incorrect Sizes
Even if you ask iPhoto to print a standard size print, the image that comes out of the printer might not be the size you want. This can happen for a few reasons:
Poor Print Quality
The main complaint with printing occurs when print quality doesn't meet your expectations. Here are a few suggestions for addressing print quality problems: