Open cart extension developer needed to improve PDF Invoice Pro

[login to view URL] Hi I need the above extension to include the following functions: - Create own template design for invoice - Generate customized packing slip - Get the packing slip in various admin emails with various cover letters per products I have the extension downloaded, which I will upload as PDF Invoice Pro (core) v2.4.12 and PDF Invoice Pro (libraries) v1.1 files in file folder after awarding. I will need you to guide me how to install the files, and also I will need your assistance testing them. I have 5 opencarts which already include the original file and as a result of this project I need all 5 opencarts to have a tested and fully functioning updated extension. Please only apply if you are happy to work via teamviewer at the stage when you are in cpanel.