Dear Sir, Madam,
I am very interested in your project. I believe that my skills and past experiences have well prepared me for a position such as this. I am willing and able to begin work immediately and I am available to work as much and as long as you need me to. I have great English skills and I believe that I would be perfect for this position. I am very punctual, responsible, and reliable and you can count on me to always get the job done.
Best wishes!