So to start with here is a cool alternate picking study. This lick is based around power chord shapes with an added 9, similar to those you'll see in many Police songs. This lick is useful to help you develop your alternate picking proficiency as well as helping you to extend your ability to stretch. If you are struggling with the stretches try moving the exercise to a different position - i.e. start at the 10th fret rather than the 5th. The aim is to alternately pick every note even when changing string.