Success Secret 1#
Embrace Agile and use it correctly; don't use it as an excuse for not doing things e.g. documentation. Documentation should be produced of requirements, design and acceptance criteria, process documentation etc.
Success Secret #2
Ensure teams are co-located either physically or via IT systems and the Product Owner is part of the team. A collaboration environment which allows all team members to see requirements, development tasks, test plans and results, documentation etc all in one place is essential to success.
Success Secret #3
The team and Product Owner must be empowered to make decisions. It is all about getting decisions made quickly. Try and fail fast is the key to success.
Write something about yourself. No need to be fancy, just an overview.