This carry is tied in a similar way to a Front Wrap Cross Carry in a wraparound sling. It is easier to partly tie the podaegi before putting your baby in but you can also tie around your baby if you wish.
Put the podaegi on by holding the middle of the headrest against your waist, then bring the straps around to the back then up and over your shoulders, crossing at the back.
Pick up your baby and slide them down into the poadegi blanket.
Pull the straps horizontally to make sure they are tight against your back. Hold your baby and the other strap with your free hand.
Cross the straps under your baby's bum and under (or over legs) and then back around to your back to tie (or you can tie under baby's bum if the strap isn't long enough).
Pull on the top of the blanket to pull out any slack and check the straps are lying flat and not twisted. Also check your baby has a good seat with the straps supporting thier knees and kness higher than bum.
I love to sew. I have five curious and active kids who keep me busy!