Well that will not happen overnight.

You now have plenty of time to think over what you mistook and how you should have posted your loan application. Be active on this forum and show interest in different sections to learn about bitcoin.

The only person who can remove a trust rating is the person who gave it to you, good behavior on the forum for a period of time may lead them to consider changing the tag to a neutral one. This varies from each DT member.

Good luck on that, you are going to need it.