There is not too much difference between the 3DS Link and the orginal n64 one. Saying that, this is not what the topic is about, the topic is about the fact that he has created the 3DS one.
On that basis I think you have done a rather good job, the colours look good and you have added in the extra details. One thing I might say however is that the hair does not match the 3DS Links, though I must admit with such little space making it match would be a huge hassle, and what you have now works.