blow things out of proportion (ART Vancouver); make heavy weather of (Баян); make a mountain out of a dust speck (Andrey Truhachev); make a song and dance about it (VLZ_58); make a big thing out of something (It was a minor error, but she made a big thing out of it. Wakeful dormouse); make heavy weather ("So snap into it, my lad. I can't see what you're making all this heavy weather about. It doesn't seem to me much to do for a loved aunt." (P.G. Wodehouse) ART Vancouver); turn geese into swans (источник – рубрика "Фраза дня" на сайте

yandex.ru baletnica); make a tempest in a teapot (Taras); make a mountain out of molehill (Taras); blow something out of all proportion (The problem was very small but the manager blew it out of all proportion – Проблема была очень не серьезной, но менеджер сделал из мухи слона Taras); make a little thing out to be a big thing (Alex_Odeychuk)

make a mountain out of a molehill (дословно: Делать гору из кротовины); make mountains out of mole-hills

turn molehills into mountains (О. Шишкова); blow out of proportion (Alex Lilo); cackle (громко говорить о каких-либо незначительных достижениях); make a big deal out of something (sunshine_russia)

досл.: "делать из кротовой кочки гору" делать из мухи слона

делать из мухи слона

: 12 фраз в 5 тематиках