How do I control my shaking hands and nervousness during my weekly presentations?

Beta blockers. Beta blockers such as Propranolol are commonly prescribed for presentations. You can't take if you have asthma. Relaxaton therapy, rehearsal also help. Benzodiazepines like Xanax (alprazolam) or Klonopin may help as well but can cause sedation and dependence.
Xanax (alprazolam) & Inderal. May also benefit from toastmasters dale carnagie etc.