sentence: Now I have decided to improve my writing skills , because once they have improved , I will be very happy and I think that my ideas ' expression will be good .
modified: Now I decided to improve my writing skills because once it became improved I would be very happy and I think that my ideas ' expression will be good .
transformation: VERB:TENSE, PUNCT, PRON, VERB, PUNCT, VERB:TENSE, K