After returning he entered to the painting department of the Leningrad Vera Mukhina Higher School of Art and Design.

After 2 years he changed the Department into the Painting and in 1956 he graduated from Ilya Repin Institute in Mikhail Bobyshov workshop.

His Diploma work were series of sketches to the scenery and costumes of an Nikolai Rimsky-Korsakov`s opera "Snegurochka"[4] Since 1957 Yaroslav Krestovsky has participated in Art Exhibitions.

[5] In the 1960s, Yaroslav Krestovsky was a teacher of the Painting Department of the Leningrad Vera Mukhina Higher School of Art and Design.

Counteroffensive to Belgorod»[19], «Watch and Dolls»[15] (both 1972), «Turbine Construction shop»[20], «Pickers»[21] (1975), «An Hour before Sunrise»[22], «Thunderstorm», «Troubled White Night»[23], «Leningrad Motif»[22] (all 1977) и and many others.

Another members of the Group were: artists Valery Vatenin, German Yegoshin, Zaven Arshakuny, Boris Shamanov, Leonid Tkachenko, husband and wife Victor Teterin and Evgenia Antipova, Valentina Rakhina, a wife of German Yegoshin, Vitaly Tulenev and sculptor Konstantin Simun with support of art-critic Lev Mochalov.

In the future they demonstrated their art works in solo or in the big common exhibitions with two or tree participants in Moscow and Leningrad.

In 1970s the eyesight of Krestovsky suddenly began to fall, he couldn't paint from this time and late went blind.