I actually started moving my feet a bit when I got to Time Stopper, but I personally have some suggestions (even though I can't make music at all :x )
1) Your bass lines sound a bit scratchy. I really like the tone, but perhaps try to smooth the sound out a bit more.
2) Most of your notes abruptly stop before the next one is played. If you can, try adding a fade effect so each note sounds like it moves naturally into the next, instead of it sounding too "midi-ish"
3) Some of the sections of your song get too repetitive. I don't really mean parts of songs repeating too much, but rather you just playing the same note many times in a row.
4) Finally, I think a couple parts sound too unattached from the rest of the song. What I mean is, they don't really sound like they belong because they differ so much from the rest of the tune.
Examples in Time Stopper and Sunset Breeze:
1) Time Stopper 0:15, Sunset Breeze from the beginning.
2) Time Stopper 2:15, Sunset Breeze does a better job, but the lower tone still does this from the beginning.
3) Again, both of them start this out at the start of the song. Sunset Breeze pulls out of it quickly though.
4) Time Stopper 3:15, Sunset Breeze with the higher pitch at 1:00 and 3:00
I like how you're improving, and hope you don't quit this soon.
(Also, your link to Party at the Shire points to Sunset Breeze, not your new song)