Dear Sir or Madam,
Hi, my name is Javier, and I'm a professional from Spain. I have done the type of job that you are asking for before and I will be more than happy to offer you my services.
The five things that make me different from other contractors:
1. One job at a time: your job has the highest priority.
2. Great communication: you can reach me any time during the job and see my progress.
3. Full-time: I will work on your project every day of the week, several hours a day.
4. Professional: I'm dedicated to delivering the best possible results.
5. 100% guaranteed satisfaction.
I have read your requirements and I'm pretty confident that I will be able to get your work done within a very short time frame.
I look forward to hearing back from you and hope we can work together.