Must freshly snowed to make snowman before snow freeze too hard. Fresh soft snow easy collect gather and shape them. Too many hours after snowing they compacted and harden up, then the efforts required is too much.
You must catch a heavy 2 hour snowing, have 6 to 8 inches of soft snow, hurry do it, completely done. Compact and solidify it. Later it turns and harden, only small modification possible Liao.