Well, the first step would be to ensure the tree is getting enough sunlight. A good amount of sunlight is crucial for a tree's health. You could also add some fertilizer to the soil, which can help the tree absorb nutrients. And lastly, make sure the tree has enough water to stay hydrated. A tree needs water to survive, so it's important to make sure the soil is moist but not waterlogged. By following these steps, you can help ensure that your Christmas tree stays alive and healthy outside!