Techniques

• Use ready-mixed joint compound for the best results. Even though it is called "ready-mixed," you still need to thoroughly mix it, or it might turn out lumpy. The consistency you need for your joint compound depends on the look you are going for. If you want a stucco-like texture (thick, pointy peaks), do not add water to the joint compound. If you want to achieve a gentle, brushed look, add enough water to the joint compound to give it a toothpaste consistency.
  
  Orange-peel, knockdown and simulated acoustical (popcorn) textures all require an airless sprayer that can be bought or rented at most hardware stores. Orange peel and popcorn textures require the addition of specific aggregate materials (also found in hardware stores) to your paint or joint compound to achieve the look you are going for. After the aggregates are mixed in, spray the surfaces you want to cover.
  
  To create a knockdown texture, load the airless sprayer with joint compound. Test the applicator and pressure settings on a scrap piece of drywall to fine-tune your texture. Then spray the wall with the joint compound, making sure it is evenly splattered. Wait 20 to 30 minutes, then "knock down" the peaks by gently wiping them with an 8-inch drywall knife. The final effect is a mottled, slightly rough surface.
  
  Create stucco-like surfaces by applying a thick coat of joint compound. Then press a 12-inch drywall knife flat against the joint compound and quickly pull it away. This pulls joint compound away from the surface and makes sharp peaks. If you allow the joint compound more time to dry, less joint compound will be pulled away. Note that this technique creates a rough surface that will be very difficult to remove after being primed and painted.
  
  You can even add dye to your drywall joint compound. You can use food dye if you wish, but it is best to buy dye designed to preserve the long-term stability of the joint compound.
  
  One common dying technique is to use several complementary tints. Apply a thin, uneven coat of one color and allow it to dry. Then apply the next, this time filling in the bare areas left by the previous coat. The final effect is a mottled, multi-colored surface.
  
  By mixing and matching these techniques, you can create a variety of faux finishes, from suede to masonry. For example, you can combine the knockdown technique with the dying technique to create interesting effects. Also, try using stencils, brushes or wet rags to simulate real-life textures or create brand new ones.