I am new to turkey hunting and I am stumped. I recently purchased a few mouth calls and can't quite figure out how to get the right sound out of them. They say to put the round end in first and use your tongue to make different sounds. How do I use it properly? I can make some sounds but it sounds like something dying. I can make a better sound putting it in backwards and sucking in. What am I doing wrong? Any help is greatly appreciated.