Dear Mr./Mrs.
I am confident that my skills are suitable for your low pass filter project, so I would like to get more information about your requirements in terms of frequency (cutoff).
I have a wide experience with electromagnetics design and simulation, as I am professor in the field of communications, and I have developed diverse prototypes for microwave systems. I am an advanced user of high frequency circuit simulation software as ADS and AWR.
Based on the above, I think I can contribute to your project and bring my experience to make an excellent design.
I hope to work with you.
Sincerely,
Andry