Good try, but the key should be G for the clarinet. In Massenet's orig. the chord outlined in the third bar of the soloist's part is the tonic. If you have a piano part, the piano here would be in F, and the clarinet transposed to G. But you shouldn't do that here with a lot of accidentals, just use the G key signature. Winds transposition can be really confusing, and it's not consistent at all. You might want to have a look online at some guides to how B-flat instruments (clarinet, trumpet, tenor/soprano sax) are handled in creating transposed parts. Again, nice try. :)