How to write Odesk cover letter

This is my first blog. today i give some example of odesk cover letter. Your cover letter must be related to your applied job.
First the letter as, Hello Sir/Madam, Dear Hiring Manager, Have Good Day Sir etc.
Now you have to write something about yourself as I’m Mosharrof from Bangladesh. I’ve 1yrs experience on writing about technology.
Here is some example below of cover letter:

Dear Sir,
I have experience in website data entry other task easily and having ability to give back to you fine results. I am a student of MBA (Banking & Finance).  I always prefer part time jobs. I have good history on oDesk. Hope so you will hire me for this position for better results. Looking forward to work with you.

Thanks,
Your Name goes here

To whom it may concern,
I am a stay-at-home mom and have been searching for online jobs to do while my daughter is in school. I have worked in the administrative field for 5 years and have a diploma in Executive Office Assistant. I have excellent communication skills and English is my first language. I also enjoy typing and researching websites. I am available at any time during the week and my peak hours would be Monday, Wednesday, and Friday morning from 8:30 am – 11:30 am.

I look forward to hearing from you.

Sincerely,
Your Name goes here

Hi,
Let me introduce me as a hard working data entry professional willing to go that extra mile to achieve the targets set forth. I have excel- lent English skills and proficiency in E-commerce site navigation. I hope would be the right candidate for the current position with you.

Awaiting an affirmative response from your end.

Thanks and Regards,
Your Name goes here

I am writing in response to your advertisement for a Data Entry Assistant & SEO Good English.  After carefully reviewing the experience requirements of the job description, I feel that I am a suitable match for the job. I’ve held several data entry positions that entail inputting customer requests, inquire, and tracking codes of products I also perform administrative duties including copying and faxing documents, answering telephones, transferring data, web research and reports to immediate supervisor. I feel that I can add professionalism and accuracy to your current team of professionals. With extensive experience supporting all levels of a department and working directly with external vendors, I take direction well and can complete a heavy workload and complete projects under minimal supervision. If you feel there is a mutual interest, I would welcome the opportunity to meet with you to learn more about your company, the requirements of the position, and how my qualifications would be a good fit. Thank you in advance for your time and consideration.

I look forward to Hiring from you soon.
Your Name

Hi, this is Your Name from City and Country. I am confident; I can take up your project and do it with perfection. I have excellent experience in web research, phone research, list building, message retrieving/submission, and mailings. I may be new to odesk.com with one positive feedback and one ongoing project over 100 hrs.  I am sure, I would be an ideal virtual assistant to accomplish your requirements. I will be available on part time basis, you decide the time, and I am there with uninterrupted Internet connection. I have work experience as Administrative Assistant, handling All Business related matters. Strong written and verbal communication skills, including the ability to communicate adverse decisions and differing opinions in a positive, professional manner. Courteous, trustworthy, loyal and respectful. Having sound knowledge of computer applications, software installations, PC Troubleshooting, solutions providing for software maintenance and updates.

Please try me, I will be a handy candidate on long term basis.

I look forward to Hiring from you soon.
Your Name