PowerPoint and graphic design

I am looking for someone to re-do PowerPoint presentations and can create custom graphics to match company brand. I have marketing materials from vendors those need to be converted into PowerPoint slides. Other documents will need to be created from a scratch, it'll be sever infomercials describing our processes.
This can be part time or full time position, it should last 1-2 months. I am in GMT-5 (central zone), you can work anytime you want we will do quick check every day to make sure everything is going well.

PLEASE provide samples of your custom designs, those will be prioritized.