Methods of making a fiber-reinforced composite are described. The methods may include applying a sizing composition to a plurality of fibers to make sized fibers, where the sizing composition may include at least one of a curing agent or an accelerator for a resin composition. The sized fibers may be contacted with the resin composition to form a resin-fiber amalgam, where the resin composition includes 50 wt. % or less of a total amount of the curing agent and the accelerator that is also present on the sized fibers. The resin-fiber amalgam may then be cured to form the fiber-reinforced composite.