@fgallienne, I think this cut can produce a better cut. This one has somewhat jagged edges and no collar.

With the excellent free tools on remove.bg and photopea.com, there has never been as good a time to provide quality cut-outs, quickly and easily. Have a look at this thread for more guidelines and video tutorials on what we expect for from our cuts. Pay attention to the requirement of needing collars for all cuts and to that of needing to rotate images when applicable, as shown in the video tutorials.

By way of introduction, here's is a tutorial on how to use remove.bg and photopea.com: