Complex sentence: Guerrero began her show-business career in the 1980s as a cheerleader for the Los Angeles Rams, after which she moved on to be Entertainment Director for the Atlanta Falcons and New England Patriots.
Split into simpler sentences: Guerrero began her show-business career in the 1980s as a cheerleader for the Los Angeles Rams. After being a cheerleader for the Rams, she moved on to be the Entertainment Director for the Atlanta Falcons and New England Patriots.