eBay Trading Assistant

I am qualified to become an eBay Trading Assistant. I REALLLLLY want to try this but am quite wary of doing it. I worked for a LONG time and hard for all my feedback and have a great selling record and am afraid somehow it will all be in jeopardy if something goes wrong selling stuff for other people. I am not a "part-time" seller. It's my living and I love it. I've been mulling the idea around of selling stuff of others for a couple weeks and still can't decide. I keep writing my 'ad' and then backing out, I just wish I could get some feedback from other trading assistants about the pros and cons of going through with this! Argh! Should I...shouldn't I?? Decisions...decisions.