Used Waltzingmouse My Heart for a card and coordinating bag (filled with chocolates, of course). Took a very simple approach -- one layer card and one layer bag. I put a piece of cardstock inside the bag before I stamped it so that the ink would not transfer to the back of the bag.
For something like this bag (Paper Source), which I do not intend to wash, most inks will work just fine. I used Versamagic and just let it air dry a bit.
The heart on the card has some gold stickles, which brightens it up. Love this set, which has a rustic feel that is trendy (why use two words "on trend" to say "trendy"???) and pretty.
MOOD WHEN DONE = Lovey