Support

Is your support too strong?  

Many singers I have found use too strong of a support. 

I believe the support mechanism requires as a rule a gentle support.  If too strong, we run the risk of having muscles too tense around the diaphragm and mid-section. The residual effect can at time carry tension clear up to the throat, therefor affecting the vocal folds. 

If we start tensing unnecessarily in our throat, then we begin to have major issues with tension in the sound: the vocal folds will not be relaxed and vibrate freely, and the throat will be tight, and the sound will be uncomfortable for the singer and listener.
  

Remember these three rules:

1.  The air should always be flowing out of your lungs.  It should feel like a 'river' of air flowing out of your lungs, through the vocal folds and out of your body.

2.  Try to keep your support 'stable' and in your midsection.  Not let the support creep up into your chest or you will be too tight in the throat. 

3.  If you push down too hard in support, then you will also be tightening all the muscles too much. 

So, take a nice round breath, GENTLY push down or out, focus any tension at the sternum (so that the throat can be free), and then you will have a better support and sound.