To reduce wrinkles, you can smooth the sweater with your hands after you fold it. This method can be used for both cardigans and pullovers.
The open part of the hook can be facing upwards or downwards, as long as the hook part of the hanger is in the right place.
If you’re using a hanger with a bottom bar, you can tuck the sleeves through the hanger and under the bar once you fold them over the shoulder. This will help keep the sleeves in place while you hang the rest of the sweater.
You can also tuck the torso of the sweater under the bottom bar of the hanger if it has one to help keep the sweater on the hanger.
If you’re using a plastic or wooden hanger, be aware that the sweater might slip off of the hanger, especially if the sleeves and torso aren’t tucked into the bottom bar of the hanger. To prevent slippage, you can use a felt-coated or velvet-coated hanger which will hold the sweater in place.
The tissue paper keeps the fibers of the sweater from molding to the hanger, which causes bumps and hanger marks. Additionally the paper prevents the fibers from catching on each other and bunching, which can cause wrinkles. The tissue paper should touch just below the collar and reach all the way to the bottom hem of the sweater.
Be sure to smooth the sleeves as well to keep them from creasing when you hang the sweater.
Make sure the tissue paper is also under the bar, as this will also be folded and hung up with the sweater to keep the fibers from rubbing against each other and molding to the hanger.
Once the bottom hems and the sleeves are through the hanger, it may be easier to slide the hanger up to the center of the sweater, rather than pulling it through. Test both techniques to see which one works best for you.
Make sure the sweater doesn’t become wrinkled when you put it in the closet.