Phantom

hey! does anybody know if there is a version for R20 around?

Hey there! Once more, i'm having trouble with hard surface modeling, this time it's the "wings" of a butterfly nut. I'm always getting weird shadings even if create quads only. Can anybody tell me what i'm doing wrong and where to set the needed cuts? I watched like every tutorial on youtube but still can't make it work. Attached some pics of the mesh and a preview render with the weird shading. Thanks in advance! :) edit: the second pic is with subdivision surface on.