I thought that was a fabulous idea!
Here's their suggestions for working with the overlays (you can view this same post on their blog):
1) Open the image in your software program (such as Photoshop Elements).
2) Resize the image first to 4x6 at 300 dpi (1800x1200 pixels).
3) Ali has created her December Daily™ 4x6 overlays to perfectly drop on top of your pre-sized 4x6 photo. No adjustments needed! TO MOVE THE OVERLAY ONTO THE PHOTO use the black arrow move tool in Photoshop Elements/Photoshop to move the PNG file onto the 4x6 photo. I have a tutorial for adding elements to photos here.
4) Flatten. Save as full resolution .jpeg. Upload and order.
Your borders will be cut off if they are placed too close to the edge of the image.
This bleed explanation pertains to all photographic printing.
Designer Digitals Quarterly Sale continues this week with all products 30% off. Here's two more new products from me that became available last Saturday:
First up is a set of 4x6 layered templates for easily adding and printing more than one photo on a 4x6 canvas.
And a set of Happy Christmas 12x12 text overlays. These come as black PNG files, can be easily recolored and are great for printing on transparencies.