The design has a playful, futuristic look.

This concept works well in crowded urban environments where ground traffic is a problem. When presenting your idea, it might be helpful to include a drawing of it in an urban setting to help viewers imagine its use.

1. Foldable Wings - Great for compactness and storage when not in use. You could explore a mechanism where the wings can retract or tuck into the body. For your prototype, try using paper hinges or even tape to simulate the folding action.

2. Lightweight Technology for Jet Engine: What makes this jet engine lighter or unique in comparison to standard ones? Explaining this could add depth. You might not be able to simulate these in a low-fidelity prototype, but you can add lightweight elements (such as paper tubes) to represent them visually.

3. Since your concept involves flying above ground level, solar panels could be installed on the roof or wings to capture sunlight. For the prototype, you could represent this by attaching reflective or dark-colored panels on the roof and wings to signify solar cells.

4. If your concept flies at a low altitude, wind turbines or small-scale wind-powered generators could help with propulsion or charging auxiliary systems while in the air. This might not work as the primary power source, but it could complement solar power to keep certain systems running. You could include mock "wind-catching" elements in the prototype to illustrate this.