Speaking clearly. Improving voice and articulation: Фонетический практикум. Фомиченко Л.Г. - 4 стр.

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notice any results immediately, but if you disci pline yourself and
hang in there, you will eventually. Take your time! Be patient! Change
takes place slowly.
      Bear it in mind that a first-rate voice is distinct, intelligible,
and easy to understand. Articulation must be as sharp and incisive as a
laser beam. How important it is to sound intelligible can be illustrated
with the following situation:
      «A reporter specializing in small businesses called a real estate
broker.
      Receptionist:
      «Gummenendawanda».
      «Would you repeat that, please?»
      «Whoja wanna talkta?»
      «No one at your firm, thank you».
      Potential loss to firm — $ 5000 in commissions».

      Wrap-up
      1. Many authorities believe that the way we talk is actually far
more important than the way we look.
      2. Talking effectively is vital to success in life.
      3. People are seldom aware of their own vocal faults and are
almost never aware of how their voices sound to others.
      4. Practice is the single most important factor in voice and
articulation improvement. Poor pronunciation is the most common
speech fault.
      5. Much practice will help you get stage fright (public speaking)
under control.
      6. Maintaining good posture and eye contact and avoiding verbal
fungi (uh, you know, okay, etc.) have a positive effect on the way you
look and sound.

     Good luck!