Find a picture to use as a guide... This is the one I used for the general idea for my picture.
Use the pencil to sketch an outline of where your eye and stripes will be. This will allow you to leave part of your canvas blank when painting the darker colors.
Mix a bright yellow with a teeny tiny drop of black to make a golden yellow. Paint all areas except what you'd like to be white with this golden color. Allow it to dry before continuing to next step.
Paint your black spaces over the gold: the pupil, eye area, and stripes. The stripes should have rough, feathered edges to look like fur. The pupil should be as smooth edged as possible.
Once the black is dry, use gray (or make a gray with white and a minuscule drop of black) to fill in remaining areas. Create rough feathered edges as these are furry stripes!
While the gray is still wet, take white and blend in over the gray. Keep your brush strokes going with the grain the fur would be.
Use your white to add an accent to the pupil and to add depth to the black areas.
Take your golden color, add some yellow, a dot of green and paint the iris of the tiger, keeping the edges smooth. Add accent lines and subtly and lightly blend them, adding depth to the iris. Tada!