Locate the "rounded" seam where the fabric is sewn together. It is also the part of the sling where the logo is attached.

Fold your sling inside itself so the non-printed sides of the fabric are facing inward so that the wider hem is on the outside and the narrow hem is on the inside.

Your sling now looks like a double layered fabric tube.

Slide your dominant arm through the sling is you're pulling the fold towards yourself.

Put the sling over your head and onto the opposite shoulder so it looks like a sash with the narrow hem closest to your body and the wider hem outside. The folded edge should be closest to the floor and the open edge should face upwards when done creating a "pouch".

Find the original "rounded" seam and slide it to be below the breast opposite from the shoulder that the sling is resting on.