Dear employer,
I have seen your project and I look forward to work with you. I believe it is an interesting opportunity to develop my skills and grow in this profession.
As you might have seen on my profile I am a starter freelancer, I can´t provide you a portfolio but I assure you my compromise and dedication to the project. I am really looking forward to improve my experience and despite my lack of experience I aim to deliver you a professional article.
I will be waiting for your response to evacuate any kind of doubt or suggestion you have to ask me. As you said "time wasters please keep of", I am not here to waste neither your time or mine.
Yours faithfully,
Diego Bueno.