Fill an all-plastic garden sprayer half way with water and then slowly add stain, careful to avoid splashing. Apply the stain with an all-plastic garden sprayer. Start in the corner and randomly spray the mixture, holding the nozzle of the wand approximately 18 inches from the floor. Apply the mixture generously, allowing it to fully coat the concrete...just short of puddling.
Use a gloss finish water-based sealer. Using either a roller or a pump-up garden sprayer, start in the corner and apply two light coats rather than one heavy one. Make sure there is ample drying time between the two coats. Once dry, apply the final coat of sealer.