Possible challenges: Transliteration of names, ensuring consistent use of Aleksei Valerevich Kovalskii or Kovalsky (different sources might use different versions). Also, distinguishing his works from those of his father.
Finally, conclude with his impact on Russian art and how he's remembered today. Maybe mention any modern exhibitions or tributes to his work. aleksei valerevich kovalskii updated
Now, his significant works. I remember "The Appearance of the Mother of God to St. Sergius of Radonezh" was a breakthrough. Maybe another painting? "The Last Judgment" by Domenico Ghirlandaio is another one. Then there's the "The Appearance of the Mother of God at Lake Dzhugdzhur." Need to describe these, their themes, style, and significance. Maybe mention any modern exhibitions or tributes to his work
Adding a personal touch or anecdote could make the piece more engaging. For example, a story about how a particular commission came about, or a notable reception of his work. Sergius of Radonezh" was a breakthrough
I should check if there are any controversies or unique aspects. His collaboration with other artists? His blending of Orthodox traditions with Western techniques. Maybe his personal life, like any struggles or achievements.
Structure the piece in sections: Early Life and Education, Artistic Style and Major Works, Legacy and Influence. Maybe add a part about his personal life or how he was perceived during his time. Quotes from contemporaries or his own writings if available.
Check for any recent scholarship or updated information. Assuming there isn't much, as he's from the late 19th-early 20th century, but still, avoid outdated information.