It's quick, simple, and not permanent, so you can go back to a regular shawl if you want to. All you need is two pieces of string (or ribbon). I used crocheted chains, turning the project from "in just a few minutes" to "in under an hour" (I'm a quick knitted, crocheting is another thing;)).
The strings are used to form the arm seams, they are tied at the desired length, puckering the "sleeve" as much as you wish.
(BTW, you can do that with every knitted triangle shawl, as long as they have the eyelets in the middle and on the edges)
And it goes like this:
Start with the middle of the shawl. Weave the string on both sides of the "spine". You don't have to go through every eyelet, just see what looks best with your shawl (some yarns may turn too bulky for that).
Then tie the string to regulate the length of the "sleeve".
Now you need to make the other "sleeve". Use the string to lace up the edges. Remember to leave enough room for your head! ;)
Then repeat the "tie to regulate the length" part. You can lace up the whole length (apart from the neckline, of course), or you can leave the very end split.
This photo shows the poncho "sleeves" - formed in the middle of the shawl (on the left), and laced up (on the right).
And that's it, the Faux Granny Poncho is ready:)
The Faux Grannies from these photos are available for sale at www.KnitsDeLuxe.Etsy.com - with strings (not) attached:)