Hi Noam,
How did you compose these? Do you use stop-start improvisation, allow your ideas to coalesce over time via improvisation, or do you use a program like Finale? No matter what method you used, they're very nice! You are clearly gaining a solid intuition for traditional harmonic and melodic structure. My only reccommendation would be to introduce more variety into your playing, more dynamics, etc.
Overall I am very impressed! Keep up the good work!
I just listened to the waltz after I posted, I think this is my favorite of the three!