Start by shortlisting creators in Discovery, export them to the Media Plan Builder - one Google Sheet with standardized rows (subscribers, L30D ER%, min/avg/max views, posts/mo, avg likes/comments, audience age/gender/top countries, outreach fields). Use normalized ER/views and cadence to compare fair apples-to-apples; add spend to calculate CPM/CPV/CPE locally, approve, then monitor live campaign performance.