Poor English2

I have visited "The national art center, Tokyo" today. My friend's picture has been exhibited in that museum of "Dokuritsu Ten". It was very beautiful.
He has been applying for the public advertisement exhibition for many years. He becomes good at the picture gradually.
I became glad a little. However, I felt sad a little.
He is drawing the picture because he likes pictures. But I live because of work.
Then I ate lunch at that museum's restaurant. It's so delicious. Therefore I think "C'est la vie!".