Please create new sections at the bottom of the page.
If we were already talking on this page but the conversation is gone: you'll find our conversation in one of the archives unless you were rude. You can revive it by creating a new discussion here and linking it to the archive and you can even move it back with attribution in edit summaries with a civil note (if you're comfortable with wiki markup).
If I have left you a message on your talk page, you can reply there, but remember to add a {{tb|replace this with your username|ts=~~~~~}} template to my talk page because I might not be watchlisting your talkpage if we don't interact regularly. I will do the same for you if you ask me to or if you have not recently commented on my talkpage in the discussion.