Your question is Improve Model Accuracy. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You have a model that is not meeting the accuracy target, and the team wants it improved before the next release. You have access to training results, validation results, and a labeled holdout set.
What steps would you take to improve a model's accuracy?