Thanks for all your answer!
Jesse, the baking soda that you use in case of sticky mess, i imagine it's in dust format... Doesn't it?

Thanks Eddie, sometimes I've used this same process, but sometimes it works better, and others doesn't work so good.

Nice work!

Ok.
Thanks for your advise, I see it's a very difficult work... With patience maybe I'll learn a little bit...
I'll try to remake the cover .
Thanks

Thanks for your answer.
When I pull it, the waves looks little, but still there.