While the glue dries between the scales use this time to define the blade on the knife.
Using a block of wood as a stop start to shape the blade using the belt sander. First using 120 then 400 grit, start to bevel the blade (~10 degrees). Once a good bevel is on the blade change to 1000 grit and then the leather belt. The blade will start to get sharp, it is also getting thin and heat can build up fast, so, keep the metal cool by dipping into water frequently.
Use the sharpening blocks to go from 320 to 1200 grit then strop. Polish/sharpen the blade. A good bevel that is polished will glide through the wood as it is cut. This is the working part of the blade, take your time at this step.