Your case brief may contain procedural law issues or tangential questions (do not brief those points). To prepare a proper brief you must first ascertain the substantive law discussed in the case, i.e. contract, tort, etc. and then develop your brief around those issues. The operative word is brief so dont be verbose; yet present it in a manner and format which is easy to read and conveys the essence of the facts, reasoning and ruling.
Your case to brief is Dallas County Civ. Service v. Warren 988 S.W.2d 864