Help...BC Troubles

hi there, i have been natural for about two and a half years but about nine months ago i messed up my curl pattern with my flat iron. I have been wanting to BC for a while now but never found a salon or had he money when i decided i wanted to bc. i'm growing impatient and just want BC myself. the question i have is should i wait and go to a professional or should i do it myself? my fear in cutting it myself is that i will have different lengths or i will mess something up. anyone who has big chopped themselves please reply