SOPP553: I have seen Your videos about improvisation on Major and Minor chords and rhythmical canon

This question was sent by Agnese. And she writes: Dear Vidas! Your advice is great! My dream for organ playing is to do some improvisation and to be able to sight-read the score. For some practical reasons—chorals within church service, for example. I have seen Your videos about improvisation on Major and Minor chords and rhythmical canon. These were pretty simple and I could try them. I got very inspired afterwards, thank You about that. So, answering question—what is holding me back from my dream—lack of experience (for sight-reading), lack of ideas (for improvisation) and lack of self-confidence—in general. But I am pretty sure, that experience, techniques and ideas I can get from You or some other smart person. So—advice for improving sight-reading and some more simple (easy understandable) improvisation ideas would be really great from You! With best wishes - Agnese.