A PM will not accept a pasted picture. If you have a web page that has the image open, one can copy the URL for that picture on the web page and paste it into the URL field which comes up when using the 'picture frame'. The choice to upload a pic from your computer is not available in PM. If you have the recipient's email address, one can paste a picture into that. Please do not share your email address in a post which is public. It should only be shared by PM.