Shade the center dome with curved, straight and broken lines. Draw curly lines over all the arches. Shade the windows on the side domes with diagonal lines. Add a heavy black line to the bottom of each. Draw bars on all the arches that have grillwork with intersecting horizontal and vertical lines.
Shade these arches with crisscross lines. Use straight horizontal and vertical lines to finish the details on the doorway. Shade the upper left-hand half of the doorway with crisscross lines.
Your drawing is finished! Even if you don't get it right the first time, keep practicing until you're happy with your drawing.