What advice do you have for a soon-to-be Team Leader??

Always be next to your guys, doing what they're doing. For example, if your guys have to be in the motorpool doing maintenance, don't be one of those NCOs that makes an excuse to not be there (I've seen it so much). If there is a shitty detail, be there with them doing it. Always remember what leaders did that annoyed the hell out of you, and not do those things. Never have that mentality of "I had to do it, they should too", bullshit, do what you can to have your guys avoid doing dumb stuff. Stand up for your guys. That will make them respect you, and it will build your credibility.

I think the MOST important thing is get to know your soldiers! There strengths and their weaknesses. Assist them with their weaknesses and allow their strengths to make you stronger.

The biggest thing you can do is set the example of what you want your people to be. Talk is cheap but YOU are the trainer if you want those to follow, then you lead. There's a reason the infantry says, "Follow Me".