Pelone
First,
Welcome To the Forum!
Now then.
A bright cut graver is pretty much like a regular graver
except you polish the face / heels to get them very smooth so you get a well....
bright cut.
Other than that it's pretty much a stylistic thing of making cuts that make good use of the very smooth, very bright cuts.
Look at your graver and a cut from it under very high magnification. You'll probably see some roughness - nothing major just enough to give you some fine lines on the sides of the cut.
Now resharpen the graver and continue up through a polishing stage (ceramic lap + maybe some diamond spray is the general way).
Now you should have a very smooth graver that gives mirror bright cuts.