Certainly! It seems like there might be a slight misunderstanding. As a text-based AI model, I don't create or have physical proposals, Excel files, or any other tangible documents. However, I can certainly help you create or describe a proposal that you can use in Excel.
If you have a specific proposal in mind or if you can provide more details about the content and structure you want in your proposal, I can help you with drafting the text or creating a template in Excel. Additionally, if you have any questions about using Excel for data analysis, calculations, or any specific functions, feel free to ask, and I'll do my best to assist you!