Amazing article in Eenadu, that describes what it took to create the right ‘aharyam’ (make-up, diction, mannerisms etc) for the Lord Krishna’s character. One can see the difference between the first and later portrayal of NTR, and the changes brought about the Legend K.V.Reddy.

Here is the article’s web link (in Telugu)

Another interesting article picked from the web that pretty much covers the same content.