'promote an image' is a correct and usable phrase in written English.
You can use the phrase when you want to describe how someone or something is using certain means to present themselves or something else in a favorable way. For example, "They are using social media to promote an image of a vibrant and successful company."
The government used the sporting event, broadcast live on television, to promote an image of a united and modern Italy.
We want to create and promote an image of Britain which means and delivers what it says on the tin: open for global business.
Anti-Jewish signs were taken down for the games, and newspapers toned down their rhetoric, in order to promote an image of a peaceful, tolerant Germany.
What should we make of James's gesture in a marketing climate where every move seems calculated to reinforce or promote an image.
DOWNSIZING Mr. Cuomo, the state attorney general, sought to promote an image as someone who can reduce the size of government.
Thanks in part to the Church's efforts to promote an image of worldly success, Mormons also think of themselves as being unusually industrious — "perhaps the most workaddicted culture in religious history," Harold Bloom says.
The Hagstrom maps of New York City resisted that trend, promoting an image of the city as an intricate, unknowable landscape.
In 2000, the Republican Party promoted an image of inclusion during its convention, featuring many black and Hispanic speakers.
But a candidate who promotes an image as a skilled manager can suffer more when things go awry.
Mr. McCain has promoted an image as a renegade in the body, scolding it, for example, for its pork barrel spending.
But if it is intriguing, it will serve its purpose of promoting an image of BP as environmentally conscious and forward-looking.
