Hello,

As a professional (passionate / creative) designer (illustrator), I have carefully gone through your job posting on “(Job Title)” with great interest (enthusiasm) as I believe that my skills and qualifications match all of your requirements.

In addition, I continue with my (exert the) utmost efforts until client's satisfaction.

I look forward to possibly working with you. (I am eagerly waiting for your response.)

Best Regards,
Abu Ahsan