First, go to Create New Account or Sign In in the top right corner of the Home screen. Second, go to the section whatever you made fits into. Third, press upload your skin, texture pack ,blog, mod, etc. Fourth, Fill out the information that you have to fill out and put in an image (only if needed). Fifth, press save in the top right corner of the information screen. Sixth, (optional) post any comments you'd like to under "Comments." Seventh, (optional too) tell your friends about what you posted. Enjoy uploading!