hi,below is my suggestion,which is more simple and oral. Original"was winter and the snowflakes fall from the sky like feathers" My suggestion: 到冬天，雪花如鹅毛般从天空飘落。 Original "是完全冬天的和掉了从天空在形状的翎雪片" cause this is explain a scene of winter,so we firstly express the statues or background,that is"was winter", we not use "是冬天"because this is not the only scene in winter,"是"means yes or no,for express statues,better use "在",so we use"到冬天 or 在冬天". "完全" means complete,totally."完全的冬天" means totally winter,so if this mean the "deep winter", you can use simple "深冬" or "完全是冬天了". "和" means "and", for express parallel relationship,in chinese there is "和" and "并且".For example"you and me"="我和你",usually for two objects. But for express statues, or Phenomenon,usually use "并且". now,we talk about "the snow falls from sky like feature." Snow (雪花) is the subject,falls(落) is verb, In chinese the order is: Subject + verb. Snow falls. = 雪花飘落。 what kinds of snow?feather like snow; where it falls? falls from sky. Adverbial + subject, adverbial is usually adjective end with "的". for example,feather =羽毛，feather like=羽毛般的 (一般的，一样的 means similar,like) sky(天空) is the location,address, "from"="从" order subject Adjective+subject+Place adverbials+verb. 羽毛般的雪花 从 天空中 飘落。 Besides, why use "鹅毛"=goose feather-like ? Traditionally and in the textbook,the teacher tell us use goose feather like because goose feather is white,that's the same as snow white,and goose feather is big,(bigger than the ducks,joking), this for describe the heavy of snow. Actually you can use your image.