Man i can tell you being very sure that you are failed because of your documentation.The incident as of yours took place with the other guy i know.Now when he complained offensive security about it they reviwed their documents and replied that he was missing a single output screenshot in Buffer Overflow machine.Now as far as i could see i found no mistakes there.But now as i have earned my OSCP i can tell you few points regarding that
. Provide each exploit you ran with their output.If that fits in a windows its ok otherwise you can continue with the next windows.
2.Wherever you modify the original exploit highlight that and any script you used -any means any even a powershell based Nishang:provide the link of the resource from where you got that.
3.As known each ipconfig/proof.txt/local.txt
4.Their report must include their templates which they provide you.
5.provide each Nmap screenshot and your methodology on how did you approached the target.