Assuming you would like tips on painting a bird on grass in oil:
First, you will need to sketch out your design on canvas or another type of painting surface. If you are not confident in your sketching abilities, you can always transfer a design onto your painting surface.
Once your sketch is complete, start by painting the sky in the background. A blue sky is a good choice, but feel free to be creative with your color palette. After the sky, paint the grass. Start with a light green color and then add in darker shades of green.
Now it's time to add the bird. Start with the body and then add the wings. Once the body and wings are complete, add in the details like the eyes, beak, and feet.
You can also paint the bird in different colors. A white bird against a blue sky is a popular choice, but you can also experiment with different color combinations.
Finally, add any final details like trees, flowers, or clouds. Allow your painting to dry completely before adding a varnish or frame.