How do I delete threads I have made?

You can't. Only mods can.

We generally don't remove threads unless they really need removing; even if you solve the issue yourself, please post the solution so that other people with the same/similar issue can read how you fixed it.

If you really think it needs removing, hit the triangle marked 'Report abuse' at the bottom right of the thread, and give a good reason.
 

ASK THE COMMUNITY