Hello and Thanks for all your comments!
I think is not a stupid question, in fact i have done it during the night.
(today's photo)
Probably was a great idea... or may be only a chance.
I hope that the spots will delete it...
I am sorry, i must show you the screen with other skin hehehe.
Today the screen have improved:
The 'lines' have fallen a little.
The Caanoo has not received any hit... never
Thanks and regards!