I think the bike looks pretty warlockish now, though I'm not sure about the warlock himself.

well I still wanted the rider to look unique to my army. Hes more my version of an eldar warlock than a true eldar warlock. Thanks for the comment!

The cloak still adds a lot to keep him away from being a standard guardian, as does the combed helm from the dire avenger- The new look on his bike's canopy definitely helps to distinguish him now compared to guardians.. I think it's his armor though- most people don't think of wraithbone armor as colored, though the fluff says nothing against it! I would normally at least paint his upper armor (arms, chest, maybe helm) with a spider-webbing/filigree of bone white. Or maybe just spatter runes in a bright color over his chest and helm.