Thank you, dear Brian. 
Yes, Tolkien didn't write about children of the elves. I was always wondering how they could look like.
Yes, Tolkien didn't write about children of the elves. I was always wondering how they could look like.
I think Babies are babies and it's logical that they would resemble humans.
They age just like us until they reach adult so this image makes sense to me
They age just like us until they reach adult so this image makes sense to me
I absolutely agree. 
I've read the part of History of Middle-Earth that explains about the Elves and their lifespan, and I can confirm what sharrafrost said. 
They are just like humans are as children in playfulness and curiosity, but there are also other diffences which the eye can't see at first. They age much slower - they're in full stature at 50 years (similar to 20 in human years) but they don't reach maturity until 100 years. Though they already learn to speak, and even sing when they're 1 year old.
They are just like humans are as children in playfulness and curiosity, but there are also other diffences which the eye can't see at first. They age much slower - they're in full stature at 50 years (similar to 20 in human years) but they don't reach maturity until 100 years. Though they already learn to speak, and even sing when they're 1 year old.