graph TD A[Start] --> B[Receive Avatar Description] B --> C[Create Dalle Image] C --> D[Generate 1024x1024 PNG] D --> E[Add Transparent Background] E --> F[Return Image URL] F --> G[End] style A fill:#f9f,stroke:#333,stroke-width:2px style G fill:#f9f,stroke:#333,stroke-width:2px style C fill:#bbf,stroke:#333,stroke-width:2px style D fill:#bbf,stroke:#333,stroke-width:2px style E fill:#bbf,stroke:#333,stroke-width:2px