Design a 30-45 second into video and end video

Hi, PLEASE READ CAREFULLY - if you dont follow ALL instructions below I will delete your bid. I need to have a 30-45 second video created. Specifics: It will be broken into two parts: Beginning part will be a boy walking a "funky" dog like a bulldog, throwing money over his shoulder. Plus client logo. Good quality - NOT FLAT cartoon, dont want it to look cheap. Second part : The end, the same boy continuing the walk with his dog, and a street cleaner sweeping up the money from behind and putting it in a pile. Ending with logo. I need GOOD QUALITY work, please show me sample videos. Also I wanted to find out if possible to draw characters first BEFORE animating so i can get the "look" approved. i dont want to make any work done over again after creation of video.