Final answer:
Sandy is looking to embark on the Implementation phase of the improvement project.
Step-by-step explanation:
The improvement project phase that Sandy is looking to embark on is Implementation. In the context of project management, the implementation phase is where the plans and designs are put into action. It involves executing the project activities, monitoring progress, and making adjustments as needed. Sandy is likely at the stage of actually implementing the project after going through the preparatory phase and pilot phase (if applicable).