if you are looking for coming to a valuation in order to raise an angel round to get started with your GTM strategy, I would recommend you work on a deck that has product/service market fit, and has a clear outline of your total addressable market (TAM) - I also like to refer to it as 'achievable' market from a founder perspective. List out your product/service USPs and how it stacks up against the market incumbents - define your value proposition and have a simple projection in how much business you aim to drive over the next few (4-6) quarters. if you have already started active sales, Substantiate this with the results you've achieved and put up a projection. Once you have this, talk to other entrepreneurs in your network to validate and then apply standard industry math to see where you are at.