A member of the Union of Painters of Ukraine and Russia. A member of International Federation of Artists (IFA UNESCO) and International Association of Graphic Art (ADOGI). A participant in exhibitions in Russia and abroad. In 1994 at the Moscow Psycho-Neurological boarding-house he organized an experimental art group. In 1996 by the Artistic Council of Tretyakov Art Gallery he was permitted to open personal exhibition of his works. In 1998-99 he worked out "Cure by Art" method. Sednin has opened an art gallery In Moscow. In 2000 he founded "Dee-Art" trend. His works are exhibited in galleries and private collections in Russia, Ukraine, Latvia, Bulgaria, Spain, Israel, USA and Japan.