I mainly edit the English Wikipedia, but have found myself editing Commons more and more over the past few years. I contribute through uploading my own photos, transferring photos from the English Wikipedia, uploading freely licenced photos from Flickr and sorting files in Category:Australian rules football into appropriate categories.
Wikimedia Commons goals
Take photos of current AFL players for their infobox on the English Wikipedia
Find and upload freely licenced photos of past and present AFL players for their infobox on the English Wikipedia
Transfer freely licenced photos from the English Wikipedia to Commons