Peterhof Palace. Merchant staircase at the Grand Palace

Lightly sketch the basic perspective lines and major shapes (walls, windows, staircase).

Roughly sketch the placement of the statues and architectural details.

Apply a light wash of diluted neutral color (e.g., Payne's gray or raw umber) to establish the base tones of the walls and floor.

Add darker washes to define shadows and create depth, paying attention to the light source.

Paint the gold details using a mix of yellow ochre and burnt sienna, highlighting with lighter yellows and shading with darker browns.

Render the statues with varying tones of brown and gray, using dry brush techniques to create texture.

Carefully paint the details of the iron railing, using a fine brush and black ink or watercolor.

Add final touches and highlights to enhance the overall realism and depth.