Idea 1 - Focus on employers needs:

"As a seasoned marketing professional with significant experience in establishing high-end leisure brands, I can significantly drive the growth of your recently launched Zeus Brand Sportswear."

Idea 2 - Match what they have asked for:

"I am excited to read from your advertisement that you are looking for high-calibre individuals with (XYZ) skills and (XYZ) qualifications. My experience and qualifications match these very closely and I have been seeking an opportunity just like this in which to make full use of my skills."

Idea 3 - Make use of any connections

"I recently spoke with (name of contact) regarding the position of (title of job). On their suggestion, I enclose my resume for your review."