Thank you very much, stevemarkovic. Yes, a portfolio is very important, and I am already working on it. I plan to release texture packs and 3D models priced at $5 and $10, and to cap commissions at a maximum of $20 for the first 10 or 20 orders.
I believe the best strategy is to prepare and publish these packages, as they will serve as my portfolio. In that case, I could also list each 3D model individually for $3.
Best regards.