If you haven't had any previous visa for India then the answer is no. You don't need travel tickets for evisa ...it could be any date in the future 4 months. I just applied for my son's visa and it was issued under 12 hours...
There is no specific template. Just write a affidavit stating why you didn't renew it. And get it notarized. Dont ever send your PP to Indian Consulate without the renunciation forms.