Just an FYI Lexie, a copy and paste won't really be the way to do what you were intending. I don't know what Apple has that is equivalent to this, but in Windoz there is an app called "Snipping Tool" where one can outline the area of interest, and 'cut' it then save it either to the clipboard or a file. If it is saved to the clipboard, then a paste into a webpage/email is possible and easy.
For your situation, saving the image to a png or jpg file would be good enough. Then you could use one of the image hosting sites or attach it as an attachment on Eccie.
Thank you for the kind words. They were nice to read and made my day!