If you're already good at straight ahead, ya might want to try to 'fuze up' the tunes you already know.
Impressions with a fast, hard fusion groove and distorted guitar, or Watermelon Man with some funk and a Sco tone, are examples.
.....or learn some tunes that are considered fusion standards:
Spain or Got A Match - Chick Corea
Phase Dance or Bright Size Life - Metheny
Birdland or A Remark You Made - Weather Report
Teen Town or Continuum- Jaco Pastorius
Chromazone or Gossip - Mike Stern
Fred or Proto Cosmos - Allan Pasqua/Allan Holdsworth
Most of the Sher Real Books have fusion stuff in them. Scofield's Trim and Blue Matter are in one of them (can't remember which) and those are pretty well known by American fuse heads.
Hope this helps!