Put simply, you get paid for results.
Too many sales people I work with are focussed on inputs rather than outputs. Mechanics vs outcomes. Deliverables vs results.
If you focus on the former (inputs/ mechanics/ deliverables) you will be lumped in with everyone else as a commodity. Therefore your perception of value by the market will be limited and so will your fee.
Shift focus; talk about outcomes, results and value. Help your customers measure progress. Show them how working with you and buying from you will drive results.
HOW you do it is secondary, possibly even a moot point. WHAT you deliver in terms of value is everything.