Greeting, although it seems that I'm new to Freelancer but I've been working as a professional motion graphics artist for nearly 5 years. I've some questions like
What about the voice-over, do you provide the audio?
Do you provide the other videos, screenshots, etc. you mentioned?
and some others. I hope to work with you as soon as possible and I'm assuring you that the quality will be uncompromised. Let's discuss it further in chat.