The phrase "a favourable impression of" is correct and usable in written English.
It can be used when discussing someone's positive perception or opinion about a person, place, or thing.
Example: "The presentation left a favourable impression of the company's commitment to sustainability."
Alternatives: "a positive impression of" or "a good impression of".
Fully 70% of blacks now have a favourable impression of Mr Obama.
Only a third of New Hampshire voters have a favourable impression of him.
Only 37% of the French have a favourable impression of America today, according to the Pew Research Centre, up only a bit on the 31% a year ago.
A poll conducted in January for BNFL, a state-owned operator, showed that more people had a favourable impression of the nuclear industry (28%) than an unfavourable one (26%) for the first time since 1999.
According to the AP-GfK poll, favourable impressions of the Republican party have also improved – after a nadir in September and October, around the government shutdown – as 38% of all respondents said they held a favourable impression of the GOP and 72% of Republicans said they had a positive view of their own party, up from 57% in January.
Ray Robinson quipped that Brown's performance "did not cause smoke to rise from the back of those [television] sets but the charm of his style gave viewers a favourable impression of Australian batsmanship".
After arriving he made a favourable impression on Sir Herbert Warren, the President of Magdalen College, who upgraded the exhibition to a Demyship of £80 a year and arranged for the Worshipful Company of Goldsmiths to give Denning a £30 a year scholarship.
Astor wrote to Rab Butler, the foreign secretary, urging him to do all he could to "save the life of the outstanding African leader in South Africa, and also one of the most moderate … He has a high standing with the heads of government in the rest of Africa, and has made a favourable impression on all who have met him".
Yaya Touré had the excuse that he was not fully fit, lasting only an hour, but nobody should be too surprised by the inability of Jesús Navas to leave a favourable impression on a big match.
Willian, 25, was successfully introduced to the squad towards the end of last year, and quickly made a favourable impression on the Brazil coach.
She made a favourable impression on Johnson when she immediately produced her pocket copy of John Milton's Paradise Lost (1667) to help settle a dispute between her father and Johnson over a particular passage.
