‘”Suggestions for presentation of a twenty-minute talk”’

How to present a research talk which will be remembered for a long(!) time for its presentation and clarity is a question which every newcomer would like to ask. Yes, one may also have a slight itch to prove that one is working on a very hard problem and his/her solution is straight from "the BOOK". We would like to suggest some points to ponder on the presentation only (these points may also help reduce itching).