Write your offering in the mood of a personal letter to Srila Prabhupada.  Write in a style as if you are addressing Srila Prabhupada directly (e.g. “Srila Prabhupada, it is by your mercy that I have come to Krsna consciousness.”)

The Vyasa Puja offering is meant for glorifying the spiritual master. So offerings need to be made in that mood and not be used as a platform for airing one's grievances.

You may wish to read the previous year’s Vyasa Puja offerings made to Srila Prabhupada by various senior devotees around ISKCON.    It may give you some ideas of how to express yourself.   These can be found here: http://prabhupada.krishna.com/homages

It is a courtesy to start your offering with Srila Prabhupada’s pranama mantras; we have already printed these onto the official pages.   A suggested opening is as follows: “Dear Srila Prabhupada, Please accept my humble obeisances.   All glories to you on this auspicious occasion of your Vyasa Puja.”

The main content of the offering should glorify the role that Srila Prabhupada is playing in your life as well as express your indebtedness to him.   You may also include reports about your spiritual growth, how you are meeting challenges and how you are carrying out his orders.