 
Applying dye with a  sponge  
Sponges are a highly effective way of applying dye to a large area quickly and evenly. This method generally gives you an even coat with fewer applications. Apply the first layer left to right, the second up and down. Then apply again in a circular motion for an even look. Let the first coat dry thoroughly.  
Repeat with additional coats of leather dye until it reaches the desired shade. It's best to apply several thin coats to achieve a uniform color.
Once you have a few even coats, buff your project with sheep's wool, a cloth, or a paper towel to remove any dye residue and polish the surface of the leather. Repeat process until the desired color is achieved.
Dip-dying
Dip-dying leather is a great way to ensure an even coat of dye for your leather. You can apply the dye at full strength or cut the dye with water or a dye reducer. This process usually requires only one application to reach desired results.  
Fill a container with your chosen dye and dip leather evenly into the liquid then quickly pull it back out. Wipe off excess dye with a sponge or paper towel. 
 
Once you have a few even coats, buff your project with sheep's wool, a cloth, or a paper towel to remove any dye residue and polish the surface of the leather. 
Allow the leather to dry for at least 24 hours. The leather may feel sticky at first, but this should disappear after buffing. When dry, apply a thin coat of oil to your leather to ensure moisture retention before applying a finish. Allow it to soak into your leather then buff it again. This step is optional, but it is a nice touch when applying all-over dye to help avoid your leather from becoming stiff. 
Take time to try different techniques to find what works best for you. And remember, anything you do requires practice! Here are a few recommended books to help you on your leatherwork journey. 
