The only contribution I can make is to comment that one of the many good ways of talking English in a generic 'foreign accent', is to say 'is' as if it were like 'hiss'.
"Eet iss market.com not 'meercat.com'". (Obscure reference to a British TV ad which has meercats talking with some sort of vaguely middle European/ Russian/ Slavonic accent. Actually, they are tallking, not torking )
One of the things that distinguishes English from languages such as German, Polish or Russian (good examples of Central to Eastern European languages) is that English has voiced final consonants, and those other languages only have unvoiced final consonants. This leads to English pronouncing "iz" or "bread" as opposed to "iss" or "brett"--which are stereotypical German accents when speaking English.