I do mine a teeny bit different - I cover both sides of all the chipboard pieces (it just helped b/c then I used up a WHOLE 12x12 sheet of patterned paper plus another 4x4" piece (so 10 4x4" pieces altogether) therefore using up more of my paper stash!!). I also used a hot glue gun to adhere the bottom (I've never used E6000 glue but maybe I'll get some one of these days and try it out!).
I hope the visual helps someone out - they really ARE super-easy and fun to make - and w/ Valentines Day coming up they'd make perfect little gifts (filled w/ candy of course! *wink*)