I just love these totes! This one will hold 5-7 card and envies (but I haven't made those yet!)
For those that have asked, there is really no template necessary! Just take one piece of 8.5" x 11" cardstock and score at the following:
4-1/2" from either end, perpendicular to the 11" side
1-1/4" from either end, perpendicular to the 8.5" side.
Snip the 2 short scores on either side that result from the intersection of the scores, fold all lines and Viola! The straps take ~17" of the medium twill tape for each handle.