Watch the Use Your Chord Vocab online guitar lesson by Rich Maloof from Guitar 201: Breakthroughs
One more swing through chord vocabulary here. The simple choice of a different voicing can really help you stand out — or stand back, if that's what is called for — and create variety for your guitar parts.
If there's another guitarist (or a keyboardist), consider what h/she is playing and how can you avoid occupying the same space.
If you're supporting a singer, can you find a voicing that helps provide them with notes they need to hear?
Remember your Capo tricks, too (see Capo Confusion above).