tone wise : more mids and bass. Maybe more overall gain. Try some delay as well
playing wise: better overall soloing? try something out of pentatonics. Full diatonic scales. Try some big bends. Think gilmour?
by the time you read this you will be wasting your time because it doesnt say anything
Pretty common sense, but hard to define. Use more gusto, more power, etc. Don't play a 60bpm 3-note blues solo in a shred rock situation, etc.
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Wider and fast vibrato adds lots of balls to a solo. That why Dimebag's solos where so brutal. Lots of bends and maybe a heavy metal mid scooped tone can be ballsy.

Those sort of licks. Fast.