Fidelity

1. Have you determined whether a low-fidelity or high-fidelity prototype is more appropriate for this stage of development?
2. Are the key interactive elements adequately represented in terms of look and feel?
3. Is the prototype detailed enough to solicit useful feedback in user testing?
4. Does the prototype offer a realistic representation of the final product's user interface?
5. How does the fidelity of the prototype influence the speed of iteration?

Interactivity

1. Have you mapped out the user flow to include all potential interactions?
2. Are interactive states like hover, click, and active well-represented?
3. How have you indicated the transition between different states or pages?
4. Do you have a plan for simulating any backend processes if needed?
5. Are all buttons, sliders, and forms functional and usable within the prototype?

Usability Testing

1. Have you identified the specific goals you aim to achieve with usability testing?
2. Is the prototype designed to facilitate easy tracking of user actions and responses?
3. Are you prepared to collect both quantitative and qualitative data from your test subjects?
4. Have you included key performance indicators (KPIs) to measure usability?
5. Have you planned how to iterate on the design based on the results of usability testing?

Mobile Responsiveness

1. Is the prototype optimized for testing on both desktop and mobile platforms?