Secrets Of Organ Playing Podcast

This question was sent by Lev, and he writes: Hello Vidas, Could you please (if you find time) take a look at my suggestions for progression T1TS2SD3DT4T in C major and a minor (Exercise 9-2 from Harmony for organists course) and give me short feedback about mistakes. I'd like to make sure I've understood the harmony stuff correctly so far. Thanks in advance and best regards