8 steps to become a pro interior designer:

Earn a degree in interior design

Pass the national council for interior design qualification exam

Learn the Basics of Interior Design

Learn Formal Concepts, Methods & Theory

Build a Strong Portfolio & Personal Brand

Take some pro bono projects

Look for continuing education opportunities

Continue Growing Your Skills

let me know in the comment box if you are having any further doubts

hope you find it helpful

thansk

Good Luck!