This is a simple list that you could keep with your mentoring supplies, so you can refer to them as you are planning and reflecting on your mentoring activities. The first is very important--maintaining confidentially, so the new teacher feels safe to experiment without worrying about repercussions if something doesn't work.
Make sure you read all the way through this article--packed full of advice for a successful mentoring relationship--and read the section on "Five Steps of the Action Plan for Cultural Proficiency. This is another important part of the process that you need to keep in mind.
You may find this checklist to be useful in planning out mentoring activities. I like the essential topics listed at the end of the document. It's a long list to get through, but these are essential to great teaching.
Showing both sides of the mentor relationship, this article gives both some excellent advice. "Show your weaknesses" is a great piece of advice. Let your mentee know that you've made mistakes and been in his or her shoes as well.