Sound problems

[henkaa]

Hi. 

Now that I have used my Nihilus build a few times I have experienced a small problem. 

I use a blackout mask to cover eyes and neck and in front of that I wear a worbla mask do create the mouth. 

With this setup, people seen to have problem to hear me talk. 

Any suggestions on a solution?

A bonus would be if the solution also gives me a voice closer to the one Nihilus have, to make a better experience for those I meet.