Here are three exercises that can be used to construct a solo. I have also included a short Mp3 demonstrating how to use the exercises in a solo.
Ex. 1 - This Exercise will help you improve in shifting your hands horizontally up and down the neck faster.
Ex. 2 - This Exercise requires multi-finger tapping. I hope you find it useful in expanding your playing ability.
Ex. 3 - This tab is pretty easy but it can be used to quickly connect two licks that are across the neck from each other. It is also a good exercise to help improve string-skipping and hammer-ons.
Here's the solo mentioned above.