For those of you still wondering if you are “mixing” with your head voice resonance, try this.
Visualize you are holding a pencil lengthwise between your teeth (or actually put a pencil between your teeth!). Now, direct every note you sing above the pencil line. In other words, “think” your sound into your face.
If you are pulling chest, you may notice that it helps you relax in the throat. Indeed, sometimes this is the only thing that needs to change in order to “allow” your head voice to join your chest voice…………Voila! You are mixing!