practice, practice, and when you think you got it down... more practice. using a mouth call and getting it to sound like a turkey takes time but you can do it.
the first time i put one in my mouth i about swallowed it
after about 5 min my dog just sat on my backporch steps looking at me with that... you sound so bad if i found you in the woods i would eat you just to shut you up look on his face
from that point on...every free moment i had...driving to work...watching the game on tv(wife loved that) ect... ect.. i had that call in my mouth.
this past spring i had a chance to put that work to the test and it paid off.
that being said... get it... practice with it till your family...friends... or dog

...threaten to have you locked up

... then when you bag that bird... sit back and enjoy your hard work and patience
best of luck to ya