This is Me: This is perfect for a clock workshop theme, and for the fun and happy life of the main character before the conflict takes place. The carnival organ sound is cool and works well here in this lighthearted theme.
The Time Lord: This is a creepy and eerie ambience. I like the dark atmosphere it creates. It works very well with the story you’ve written and conveys that sense of shock, horror, and fear that would accompany having your family abducted under mysterious circumstances.
Reverse Universe: I love the reverse strings. The space and silence adds to the overall effect you are going for. This is my favorite of the four tracks!
Reunion: The 7th chords and subdued instrumentation gives this track such a spacey vibe. The return of the main theme gives this track warm feeling of recognition that makes it perfect for a reunion theme and a conclusion to your OST.
Overall: This soundtrack feels like it has a well-rounded story arc, though hearing the battle music would have been the icing on the cake! This is an emotional journey and you were able to effectively convey those emotions in each of the tracks you wrote. Good job and thank you for sharing!