Have you joined up with some awesome swaps and now have to post a mosaic but have no idea how? Here’s an info-graphic tutorial I created with the steps (I created this in 2013 and haven’t checked the steps so if something has changed, please let me know so I can make adjustments. I hope this helps YOU create an awesome mosaic for your swaps!
Quick Note: If you need to load the image to Instagram instead of Flickr, don’t worry about copying the code, just save the image. You may want to paste it to Flickr anyway so you can reserve the sources of the photos. That’s VERY important when creating a mosaic. Also this assumes you are working out of Flickr anyway which is why that nifty code grabs the image source.