A: If you scroll down to the Variations on the A2 Box Tutorial you'll find simple instructions for adjusting the box measurements for any size! For your box base I'd add about 1/4" to the size of your envelopes, then determine the side measurements based on your stack of cards. It looks like A6 envelopes are 4 3/4" x 6 1/2", so I would start with a base measurement of 5" x 6-3/4". If you want the sides 2" high, add 4" to each measurement (9" x 10-3/4"), and score 2" from each edge. For the lid, add 1/8" to your base size, 5-1/8" x 6-7/8". You might want the sides to have a 1" drop, so you'd add 2" to the measurements - 7-1/8" x 8-7/8", and score at 1" from each side.

A: Not too long ago I started a new system with my 6x6 pads. I keep them in a photo box standing up. The cover goes into a 6x6 cellophane sleeve, with a sticky note tab identifying the company and collection. The rest of the papers in the pad go behind the sleeve. When I cut into one of the papers, the scraps go into the sleeve behind the cover page. I think that would be a great place to keep matching embellishments as well.

A: Of course! Here are a few fun ones:
Shaped Window Treat Box
Easel Card Treat Box
Heart Box
6x6 Treat Holder
Pull-Up Treats

A: Of course! Here are some that we've done:
Twin Pocket Purse
Petite Purse
Exploding Handbag
Card Purse
Totally Totebag

A: They do! I love using Copics and watercolors together. If you're stamping, you'll want to make sure your ink is compatible with both mediums (hybrid or archival inks are great). I would recommend starting with the markers to create a saturated base of color. Since you'll probably be working on watercolor paper, be aware that this paper will soak in more ink than others. The smooth surface of hot press paper is nice for marker coloring too. When the ink is dry, you can add shading or background coloring on and/or around the image with watercolor pencils and blend out with a wet brush.