Ah this is adorable and so well drawn! I am immensely impressed with the shading and gorgeous little noses(the shine gets me most!) and their lovely hands! It's great, I like how the style is semi-realistic and so neat. It seems like such a simplistic way of shading...not that its simple but rather that it looks so effortless for you to create such handsome fellows!
I dearly hope you have a coloring and even line art tutorial, I'd appreciate that so much! But back to the picture, this is just awesome, fun and really charming to see them all together and so fantastically portrayed!