Anybody have advice on protesting my home's appraisal value

[Steven McPherson]

I'm a first time homeowner as of last year in Tarrant County, TX and I'm wanting to protest my property's appraisal value.  Unfortunately, I pulled some comps on my home and they pretty much got the right value in my opinion.  Has anybody successfully negotiated down their property value and do you have advice for me on how to accomplish this? Thanks.