I'll tell you plainly up front that a garage slab can crack a little, even when the work is done right. What we can control is where it cracks. We cut control joints, straight grooves sawn into the slab soon after the pour. They give the concrete a weak line to crack along, so it doesn't pick its own spot across the middle of your floor.
If the budget gets tight, the base is the last place I'd cut. It's buried on day one and nobody admires it, but it's what keeps the slab from settling. A fancy surface on a weak base just cracks in a nicer color. If you want color or pattern later, our decorative concrete work can go on a floor that's built right underneath.
Out at the door, where the slab meets the driveway, the apron usually gets a broom finish. That's light grooves dragged into the surface so tires and shoes grip when it's wet. If your garage sits where the yard drops away and the ground beside the slab needs holding back, that's a job for our concrete retaining walls.