The person appears to be a/an Indian Male, approximately 20 to 29 years old.
Common mistakes to avoid when giving a presentation in an academic or professional setting include: not having a clear structure, rambling instead of staying on topic, speaking too quickly and unclearly, lacking eye contact and effective body language, failing to use visuals or engage the audience, not rehearsing adequately and not being familiar with the material, overwhelming the audience with too much information, neglecting to take pauses for questions, and not preparing a strong, actionable conclusion.
Key mistakes to avoid when delivering a presentation in a professional or academic setting include: failing to establish a clear structure for your presentation, rambling instead of staying focused on the main points, speaking too quickly or unclearly, neglecting eye contact and effective body language, not incorporating visuals or engaging the audience, insufficient rehearsal leading to a lack of familiarity with the material, overwhelming the audience with too much information, not allowing pauses for questions, and failing to prepare a strong, actionable conclusion.