Resin the outside of the part very well and letting it dry 24 hours. This is really important on the big parts, like the chest, back, legs, helmet etc, because 1 layer stills flexible and weak. After applying the first layer let dry about 15 mins, and continue with the second layer.
Repeat this until you have all the part cover it. Start applying one strip of Fiberglass Mat, and resin over it in the inner side of the part. Once the catalyst is added, you will only have 15 minutes to work with it aprox. As long as you work with this you will know how many drops you'll need). Mix a small portion of the resin (I used 1/4 of a cup) with the catalyst (10 to 20 drops, depending on the weather, if it's hot, with 10 drops it's ok.
Put your gloves, protective eye glasses and respirator. Cut the Fiber Glass mat in small or big strips depending on the part size. This will help us to avoid the resin stick to the table. Second list of material: Fiber glass resin (with its hardener) Fiber glass mat Scissors Aluminium foil Aerosol Can Lubricant (WD-40) Gloves Paint Brushes Respirator Protective Eye Glasses Dremel Tool Prapare a table with Aluminium foil, spray lubricant over it.