If you google it, you'll eventually find what you need. But I can give you a short version. Only print on card stock. Preferably 110 lb, which refers to it's durability. But not every brand has the same thickness, so buy a couple different brands, and try to find the stiffest one you can. It will save a lot of work in the end if you don't have to fix places where the paper buckled under the weight of the resin. If you have a normal printer that rolls the paper from a lower tray, you may be out of luck. The card stock has a tendency to jam something horrible in those. If you have a printer that feeds from the back, you should be ok.
Cut the parts out with a blade you are comfortable with, I suggest an X-acto knife, and if you can find it one with a reinforced carbide edge. Stays sharp longer. And make sure you have a self-repairing cutting mat thing. Saves the blade and your tables. For glue, Aleene's Tacky Glue is awesome. Stays moist long enough for precise positioning, dries strong, and wipes off your hands with no issues. Superglue is just a mess if you get it on your fingers.
Once you have your pep finished, it's time to reinforce. You can sometimes get some added durability from spraying a clear coat on the paper to stiffen it up. Then, You want to take some craft sticks, and reinforce any points on the pep that might buckle.just build a nice solid support structure with those and a high temp hot glue gun. Once you have it solid, coat the outside in 2 thin coats of resin. I had help with this, so I don't know EXACTLY what kind it was, but it was a 2 part clear resin with 4:1 chemical ratio. You should have 10ish minutes of work time, so take a large, cheap brush and brush it all over. Try to get an even coat, but if it globs up you can always sand it down or take a dremel to it.
This is where techniques start to vary. Some people line the inside with resin and fiberglass, but this can be messy and a bit of a pain. The method I learned was to take a standard 2 part plastic, and slush cast the inside. This is done by mixing whatever chemical you use, pouring some in, and just rolling the piece around to coat the inside. However I learned this for a helmet, so if you're not making a helmet you can disregard and just go back to the fiberglass.
After you have your piece reinforced, sand off whatever pieces need to be sanded down, and start coating in bondo. Bondo work time with vary depending on how much catalyst you mix in, so be prepared to have leftover. Just smear it on the piece, trying to keep it smooth and even, and then let cure. Sand down, and reapply as needed until you have the shape right. At this point most people would make a mold and cast the piece in plastic, but that is another thing altogether. Sorry I couldn't be as specific on some parts, hope this helps.