Thanks for all your replies,
I did the drawing all free hand (If I figure out how to use a scanner I could put the sketches in the Forum), transferred it and did the classical work.
Swivel, pear shading, beveling and veiner. I tried to add some decorative cuts, but it did'nt work out on this type of leather. So I added some mulefoot-prints, and voilá.
My inspiration of these floral ornaments crossing each other to give a 3D-effekt comes from the master himself,
the great Bob Park (hidepounder). Thank you very much, Bobby.