Remove as much dirt and dust as possible from the area. Vacuum, mop, and/or wipe every surface clean. Reduce the number of particles that might end up sticking to your coats of polyurethane. Dust and other particles that dry in the polyurethane will result in an uneven surface. Create a cross-breeze to get rid of the polyurethane’s fumes while you work. Open a window and install an exhaust fan facing outward. Then, if possible, open a window on the opposite side of the room.  Never place a fan in your immediate work area, since this may lead to dust being blown onto your wood as you coat it. Purchase a respirator with an organic cartridge if you are unable to improve the room’s ventilation and/or if you are sensitive to fumes. If the wood to be treated can be transported, lay out a protective covering for it to rest on while you work. Use a tarp, dropcloth, cardboard, or similar material. Whichever you use, make sure that it covers a few feet beyond the wood itself on all sides. Protect the surface underneath and make clean-up a cinch. Also make sure the surrounding area is clear of any objects that you want to keep clean, just in case you make a bigger mess than you mean to.

How would you rephrase that briefly using Indonesian?
Bersihkan area kerja Anda. Lancarkan aliran udara ruangan. Persiapkan permukaan kerja.