Completely resurfacing concrete with a polymer-modified overlay is one way to upgrade the look, and you can choose from a wide variety of color and pattern options. If your concrete is in good condition but just needs a facelift, you can also stain it or do a trowl knockdown. If the concrete has cracks or has minor lifting than you can fix the cracks with a crack repair system and smooth out the lifted parts , then you can do a resurface with whatever look you choose.