Some people are naturally good singers. Some people are able to sing using the attack of the mask. Other will feel that voice is a struggle to use. Break up and registers will not sound good. Powerful singing is easy when you are able to sing in the attack of the mask. Singing will be as easy like humming with the mouth open. Some people think that everyone cannot learn to sing. Most local coaches and online courses do not know the use of attack of the mask. You have learn to use specific parts of your body.
Manipulating and exercising some of the body parts will help to generate proper voice. Attack of the mask will not happen by just singing in the relaxed manner or singing with an open throat. It is not singing in your head voice. Forcing air through your nose is not the way to sing properly. It is possible to learn to sing beautifully with program like singorama . The only requirement is that you should follow the natural laws of voice.
You should realize that singing is a natural process and is a continuation of speech. The same vocal organs and process is used for both singing and speech. So if you can speak properly you will be able to sing also. If you are not able to sing properly means that you are singing with the wrong attack.
All problems related to your speaking voice will be amplified when you are singing. You can easily distinguish when a good singer is speaking. The voice will be often very forward and resonant. They will be speaking even in the right attack. Poor singers will generate voice from the back of the throat. They may even lose their voice if they are continuing to do so. If you are able to obey the natural laws of voice while singing you can sound better.