Understand what each major freelance platform actually costs and who it's actually built for, before you invest time building a profile there
You can explain how Upwork's, Contra's, and Toptal's fee structures actually work and who each is realistically built for, choose a platform (or combination) appropriate to your specific skill and stage, and build a profile and proposal approach that's genuinely competitive on your chosen platform.
Demonstrate real fee-structure understanding, platform-fit judgement, profile-building skill, and proposal-writing craft.