Watch the Right Hand Techniques online guitar lesson by Jimmy Reiter from Soul Guitar Guidebook
Right hand techniques such as hybrid picking or tremolo picking can be used to spice up your solos. For example, hybrid picking (i.e. using your pick AND one or more fingers of your right hand at the same time) is very helpful when playing double stops that are across three strings; a technique that Buddy Guy uses often in his solos.
Tremolo picking means strumming the strings with your right hand as fast as you can. It can make a simple lick sound a lot more interesting and also works great on double stops.