Making a twitter header photo collage | free and easy by Geek Fairy | Oct 17, 2013 | Picmonkey Tutorial, Tutorials | 0 comments This is a tutorial using free picmonkey to make a photo collage that is the right size for your Facebook cover image. If you want to do one for Facebook then please see here Submit a CommentYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email. Δ