Create a Video

Hi I need a customized whiteboard animated video edited for my online training company. I can provide only basic Text content. Images,voiceover and Script creation will be done by you. I request work process to be as below:- 1) Script writing based on attached Text. (atleast 3 revisions) 2) voice over and background music (atleast 3 revisions) 3) Video creation (atleast 3 revisions) Video duration= 60 seconds timeline= 7 days at maximum Please let me know if you can do this work and tell me how much will it cost ?