Please can anyone check my cover letter?/ give some advices?

I'm not sure about mistakes, thank you in advance for any help! :

Dear Recruiting Coordinator,

I am writing to express my interest in the position of sales assistant. During the last seven years music slowly has become my biggest passion. Being interested in all modern music history and having certain knowledge about it, I want to develop these interests in the nearest future as wide as possile. In my opinion, London is the heart and the capital of world’s music, that’s why I want to work there. HMV with his Nipper the dog, is one of the most recognizable and appreciated marks of music retail. With its over 85-year-old tradition and experience, it seems to be the best place for me and I’d like to become part of it.

During last years I’ve had different jobs and experiences which required from me responsibility, patience, effort and involvement, cooperation in group as well as individual work with people who needed my help and knowledge. My enclosed resume will show you all the details concerning my past experience. I am sure that my skills, my potential and passion for music are a perfect match for this position. I appreciate that I have no retail experience, but I’m highly motivated, ambitious and determined to direct the nearest years of my life where music takes the first place.

Thank you for your time and consideration. Looking forward to hearing from you soon.

Yours sincerely,