USA Knifemakers supply wood will be properly stabilized.
Sand to as fine a finish as possible.....at least 1000 grit. Wipe down regularly to get sanding swarf off and remove any previous grit. Change the paper often.
Buff to make it shine. Even buffing by hand with a clean soft cloth will make it shine. Power buffing is a skill in itself, and not for a new maker.
The 3M polishing paper packs are superb for handle work on stabilized wood. They come with color coded sheets of green, grey, blue, pink, mint, white. These correspond to 400 grit through 8000. Mark an "X" ( or the grit grade) with a marker pen on the back of each sheet when first removed from the package, as the finer grits are hard to tell the front from the back when used a bit. These papers can be used and used until they fall apart. Spend a little time on each grit and the last one will leave a glass like shine.
Most knife suppliers carry them now, as do jewelers suppliers.