The Economist has produced a concise style guide for avoiding the over-use of Americanisms.

Try not to verb nouns or to adjective them. So do not access files, haemorrhage red ink (haemorrhage is a noun), let one event impact another, author books (still less co-author them), critique style guides, pressure colleagues (press will do), progress reports, source inputs, trial programmes or loan money. Avoid parenting and, even more assiduously, parenting skills. Gunned down means shot. And though it is sometimes necessary to use nouns as adjectives, there is no need to call an attempted coup a coup attempt, a suspected terrorist a terrorist suspect or the Californian legislature the California legislature.

Considering I live in a non-American, English speaking country, I’m surprised how many Americanisms I use in day-to-day conversation. Maybe this will help a bit.