Q:My voice is too low on the recording
A: You may need to increase mic volume in Windows settings. NOT in Skype settings!

Start typing 'Sound settings' in Windows searchbar and open Sound Settings  from the list.

You should see Settings window, make sure that Sound tab is selected. In the 'Input' section, make sure that your microphone is selected in drop-down list of input devices. Click Device properties.

Increase mic volume to max.