Scrape in and around the crack to remove any loose material there.
Press Spackle into the crack using the putty knife. Fill it completely. Flatten it out. Let it dry for 24 hours.
Use a paintbrush to apply primer around the perimeter of the wall, at its edges. Also brush it around any window openings and other obstructions on the wall. Let it dry for eight hours.
Brush textured paint along one edge of the wall. Work your way out from there with your paint roller, rolling it onto open parts of the surface. Cover an area about 5 feet to a side.
Press your grout float into the textured paint and work the surface into the desired finish. You can pull the float outward to make peaks, turn it in a circular motion to make swirl marks, or use the long edge of the float to make random ridges and lines.
Spread additional textured paint onto the surface using your paintbrush and roller, covering another section, next to the first. Work the paint as before with your float.
Repeat section by section, stepping back frequently to assess the design and make sure you're keeping it consistent between sections. Do the whole wall. Let it dry for 24 hours before moving the furniture back in.