How to Improvise a guitar solo

When we want to improvise a solo on a piece of music, the first thing we need to know in what tone we're playing, it seems a silly thing but it is not at all, believe me. I saw and heard improvise ... alas, not knowing the slightest shade of the base on which to improvise!!!! Everything true!! If the piece is C major, I can use the C major scale, the pentatonic C major, also other, but now let's stop here!!!!!! The important thing to know is on what agreements we are playing, we have already harmonized arrangements that are formed on the C major scale (C major-D min E min-F maj-G maj A min-B dim) Example: if the piece sounds so : C maj-F Major G Major, a classic example of 1st-4th-5th of the scale as we can figure out which notes of the scale we have to use??. First we need to already know the blocks, the box, the positions of the scale of the whole handle of chitarra.This is crucial, because I can play a C in different positions on the handle, depending on the position the note passes from most severe to more acute, we choose us!!! The important thing to explain in the simplest way possible is that we landing on a note in the chord that is playing the base of the piece. In C major, I can leave with me or do or sol (the notes of the chord), when I switch F Major, I can not stay on or do or do (the notes of the chord), between an agreement and the other can multimillion on the scale, but when the solo falls on a chord change I have to respect the rule above. It is not as complicated as it sounds, try playing a known piece, what you want, and you will find that what I am saying is what they do the great guitarists Then everything else comes from the soul and feelings that one has, and then, everything is wonderful, and when it'll take you no more than you'd stop.