to hang a towel on the crossbar, you need to find a towel on the Internet from an angle. They're almost all like that, just above and to the side. You need to save such an image in a graphic editor (I use Photoshop online) using the Deformation tool to stretch the image so that the top becomes strictly horizontal. After that, you need to make three copies of this image. The first is a full-fledged towel, you need to clean the background on it and save everything in PNG.

The second picture is the front of the towel along with a piece of chrome crossbar.


The third picture is the entire back without the chrome piece, you also need to make the background transparent.


Now, if you need to hang a towel on the lowest crossbar, you can take the first full-fledged picture, as I had before. If you need to hang the towel above, then use two boxes - one in front of the crossbar with the front of the towel, the second behind the crossbar with the back of the towel.


The back box can be stretched in width to remove the gap between the parts of the towel.

When you move everything and combine it as needed, you can group these boxes. And now you can raise and lower this group to any level of the crossbars. Everything will be perfect.

And as a bonus, a light shadow will most likely appear against the wall from the towel. This method has a huge advantage over the model - there are very transparent shadows (as in the photo), there are no dark places at all near the wall and in the folds of the fabric, the perfect picture.