I can build a great animated video on Powtoon.com - a powerful tool that lets you build animated videos. It takes a lot of time to build a cool self-explanatory video even when you're using Powtoon app. I'll take care of all that for you! Just go through the sample animated video built by me, attached herewith.
What the Seller needs to start the work
Detailed concept notes of the idea to be illustrated. Answers to all the questions that I may have regarding product / service. Can provide video flow; though I'd recommend leaving it upto me for a polished and succinct video that exudes creativity. Can embed unpolished voice too, as shown in sample video (will involve extra bucks as the concerned text to speech software isn't free). Charges for using Powtoon service, if any, will be borne by client.