i want best tips to take a seminar for my academic career

Attend some presentations by others and write a report on each of the
presentations you attended. Pay extra attention to what impressed you and what
did not. Share the report with your mentor.
2. Think of an important and interesting topic for your own presentation. It should
be compatible with the level of the audience.
3. Before the presentation, try to familiarize yourself with the room, the computer
system, laser pointers etc.