2. Singing with head voice often would make my head aches.
3. How do I start singing with vibrato?
4. I don't know if I'm doing riffs 'n runs right but I'm doing it as if I'm stopping every air pressure from diaphragm and singing notes to it. I'm sorry it's kind of hard to understand what I'm saying.. It's like I'm saying he-he-he-he-he fast then adding notes to each "he". I know it would sound staccato but it's not really obvious. Am I doing it right? Do you really need to learn vibrato first before riffs and runs?