Yes, it is up to you to interpret your drawing. Here are a few questions: 1. How empty or full is the picture? 2. What colors did you choose? This drawing represents your life and the tree represents you. 3. What does your drawing say about how you feel about your environment and yourself? 4. Are you blooming? Are you waning? 5. How important are you in the scheme of things?
I hope you keep this drawing to refer to when we start exploring the chakra system. This can be a important clue to chakra energy healing needed. Stay tuned.