[anticonformist]

Remember that it is not "your" team but that you are just a member of the team, in good standing, with the relevant experience, that is volunteering to take on some additional responsibility.

Focus on the job at hand. Don't get into unnecessary political disputes. You're a tech lead, so keep it technical and focused on solving business problems.

Be kind and understanding of people's personal issues. It's a marathon, not a sprint, so it's fine if people's productivity goes up and down over time. As long as they contribute well over time, there should be no problem.

Make sure people take time off. Burn out sneaks up on people. Taking weeks off regularly is essential.

Do plenty of grunt work yourself, don't pawn it all off.

Write the most documentation and help your teammates write theirs.

Share the credit. Credit the team and individual team members frequently. Point out when people do well.

Downplay failures. Unless a mistake is malicious, you should blame the technology and the processes in place rather than the people involved. Humans make mistakes and it's through technology and process that we avoid them causing damage. Fixing the weakness in your technology or process is what really matters.

Most of all: lead by example. You should be an exemplar team member. Not perfect; no one is. Not an expert in every dimension; no one is. You should simply perform your duties in a way that your teammates could emulate with success.

There are a hundred other things, of course. That's just a few ideas.