Hello again and thanks for your great answer.
You say that I'm limiting myself and probably that it's true, being inexperienced, I may be missing things that for other are crystal clear lol. In part the reason why I speak of repetition is because I'm not trying to compose a classical piece of music, where an idea is chopped and rearranged in infinite changes if rhythm, accents and note progressions. I used to listen to a lot of classical music long time ago, but now I listen mainly to progressive rock, a genre where there are a lot of key changes, motiffs, moods and so on.
Also the score shows my own ability, or should I say inability at playing the piano lol. This doesn't bother me right now since I plan to make the structure first and then make the necessary changes to embellish my music and make it a little more complete, for example shift the bass notes between arpeggios and add some grace notes here and there.
After listening over and over to what I already have I feel that I need a kind of continuation to the idea stated in the first 13 bars. I feel it's too early for introducing a big change yet )
Once again thanks for your time, and please understand that I'm learning music theory by composing, I'm better at understanding things by doing them and making mistakes )