I suggest you extract the two path loops - for the top and bottom edges - and then use them with a plugin like Fredo’s CurviLoft…
It also needs his Lib installing…
You can of course ‘stitch’ it together by hand by drawing in edges to form the triangles etc but it’s tedious - a plugin makes it much easier…
You might also be able to get a result using the native Sandbox ‘From Contours’ tool ?
Incidentally, you can attach images and files by simply dropping them onto your post [even copy+paste works for images], so there’s no need for clunky Dropbox links etc…