You must understand how bending stretches metal. All SolidWorks tutorials for sheet metal should include bend deduction vs. K-factor calculations.
Designing it is one thing. Proving it won't break is another. SolidWorks Simulation (formerly FEA) is built into premium packages. all solidworks tutorials
Most beginners ignore the blue-to-black color change. start here. You will learn: You must understand how bending stretches metal