"Then He proportioned him," meaning: He fashioned his creation as He willed. "Little is the thanks you give," meaning: the fewest among you are those who give thanks.
﴿ثمَّ سواهُ﴾ يَعْنِي: سَوَّى خَلْقَهُ كَيْفَ شَاءَ ﴿قَلِيلا مَا تشكرون﴾ أَي: أقلكم من يشْكر