I want either highlights or maybe ombre hair to add some dimension.

I have pretty healthy hair, no split ends, ect. Will doing this mess up my curl pattern? I worked hard to bring out my curl pattern and I am finally a solid 2b, sometimes 2c.

What tips can you give me for before and after for minimizing damage?

Thanks!
CG since 6/2012

Hair type: 2a/2b i think?, normal/high porosity, fine, normal density
Lo: BS/ACV
Co: Suave Naturals, V05 kiwi lime
RO: TresSumme Naturals, Ology Volumizing
LI: KCKT
Style: AIA Curling Jelly, KCCC, Noodle head curling mouse, LALSG, AG Re:Coil
Methods: icequeen, scrunch n pump, smathers, diffusing
Currently dealing with postpartum hair regrowth.