Certainly, using acetate for crafting the vent windows of your convertible kit body sounds like a great idea to achieve a more realistic look. Acetate is often preferred for such applications due to its flexibility and ease of shaping. In comparison to clear styrene, acetate tends to be less brittle and can be cut and shaped with relative ease, making it a suitable material for creating intricate details like vent windows. When working with acetate, it's a good practice to use sharp, fine-toothed tools for cutting and shaping to ensure clean edges. Additionally, using a heat source like a hairdryer can help gently soften the acetate, making it more pliable for bending and forming. Remember to take your time and practice on scrap pieces if needed to get comfortable with working with acetate before making the final vent windows for your convertible kit body.