use chords that u find easy to play or easy to reach for a quick change...or just try diff ways to play the hords n decide on urself which suits u best..
pre-bends? in short..just bend a string while muting it with ur right hand..i guess( i just dun know how i do it ???? i'll see myself n reply agin!) n then pick it while coming back down...n also chk out J's second link.
for tremolos/vibratos: chk this out, mayb it'll b sum help..
Add soul to ur music: Vibrato techniques
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