Improvisation in romantic style about "Volk Gottes, zünd die Lichter an"

Today I bought the sample set Blackburn. Here are my first steps with a small improvisation, in which I move in one of my favorite styles and first tried a "romantic crescendo".
As a basis for the improvisation I have chosen the chorale "Volk Gottes, zünd die Lichter an" - tomorrow (2.2.) is the feast "Praesentatio Jesu in Templo", to which this chorale text fits. However, the melody of the song is better known with the lyrics "O Jesus Christe, wahres Licht".