How do you paste your copy into a file

how do you make your final creation into a file

For final creation you mean your cospace ended?

You can’t download cospaces.

Hi @Victor_Velasco as @Alessio_Bonini said you can’t download a CoSpaces
When you are finished you need to publish you CoSpaces. Here fore clicke the SHARE button.
Give you work a good title, insert a brief description. Check the attributions. Decide the people which you want to share Pubblic or Private ( by link). Once you finished reopen click view sharing options.
Now you can download the QR code, embedded your CoSpaces and share the link.
Extra: a very nice CoSpaces feature is that you can download as an image the different coding codes you have create.