Be aware of your background. It can be very distracting. Watch for angles of fences, panels, gates, posts, etc. Try and take photos in an open field if it is possible, or add/hang a neutral color backdrop to your corral to cover up the panels, posts, etc and parade the cattle in front of the backdrop. Also, know where the sun is and how the shadows play into the photos. Sometimes a bright, overcast day makes for better photos than a completely sunny day. You avoid shadows and inconsistent lighting.