Black Rose: Great additions, it feels like a full song now, and it's definitely one of your best. I really can't say much more about it. Nice work.
Pool of Tears: Unfortunately for you, MIDI doesn't do this song justice, especially for the solo strings. I'll put up an mp3 later of a version played through Finale and Garritan.
Of course, I'll have to substitute something else for the "Voice Oohs".
You did a really nice job setting the mood in this one, and it maintains that feel all the way through. If you wanted to, this song would be an excellent beginning for a much larger piece. Same goes for the other song.
Pirates: Pretty accurate, although I think it may be in the wrong key... maybe it should be slightly higher, like Eb Major? Meh, anyway, that really doesn't make too much difference, it's still accurate. At least what you have so far anyway.