Thanks Jolly McJollyson, is to late for me for learn play with a pick, too many years playing with my fingers. The irregular sound of the solos, will be resolve with practiseeing, cause I had start play guitar again after a few years with no play.

Thanks jiujitsu_jesus, there´s no necessary play with pick, I had play themes by Metallica, Satriani, Vai, Van Halen, etc, with fingerstyle, and with a good skill in fingerstyle, is possible play it as well as them.