Cover letter grammar - please help! Thank you!

My role also require that I communicate and interact with managements by updating and presenting financial information on a weekly basis. Throughout these work experiences, I have extensively improved both my organizational, attention to detail, and communication skill to a higher level, which they would be great values to your workplace. In addition, my pleasant personality and interpersonal skill make me a likable person to work with in a team environment. Moreover, I am an enthusiastic and self-motivated individual who likes to take on new challenges and to overcome obstacles. One of my biggest accomplishment was when I resolved billing issues relying on the client accounts in which I helped to retrieve over ten thousand dollars of revenue for my former company.