Before running out to put all of that together, it might be wise to find an agent or test the market to see if this really is the right industry for you! Testing the market means working on amateur sets (e.g., student films) or taking a few varied acting workshops to find out if you are motivated or disillusioned by the experience. Submitting to agents can help you gather information on what you need in order to be more marketable, even if you don’t find someone to partner with you.
In either case, use a quality snapshot if you don’t have professional headshots (or money growing on trees in your back yard). Have good lighting so that your skin, coloring, and body shape are visible. Use a solid colored background to lessen distractions. Be honest about birth marks, blemishes, sizes, etc.
Take the time to research what goes on a talent resume and create one. Even if you don’t feel like you have much experience, showing effort will get you farther than being lazy!
But most importantly, follow directions! Most agencies and auditions will have directions on how to go about submitting. Take the time to find them and then follow them carefully. The #1 reason talent burn bridges is by not doing what they were asked. Just one more opportunity for you to set yourself apart from the crowd – use those skills you learned in Kindergarten and watch doors open!