Use a tape measure to determine the length of the doorway where the floor transitions from laminate to ceramic.
Measure the difference in height between floors. Plan to use shoe molding for a height difference of 1/2 inch. Use quarter round for a height difference of 5/8 or 3/4 inch.
Use a handsaw to cut the shoe molding or quarter round to fit the length of the doorway. (If using quarter round, run it through the jointer plane to trim the height to 5/8 inch. If the height difference is 3/4 inch, you don't need to plane.)
Stain the molding to match the flooring.
Leaving room for the expansion gap, fix the shoe molding or quarter round into place with a hammer and finishing nails. Sink the finishing nails on an angle into the expansion gap near the ceramic floor.