Hi again AWS. Let me pose a question, hope you don't mind:
Why do you use this figure here? You have the very same phrase later on and you don't use it. Did you want it to make it shorter? Why not using a quarter note with a Marcato symbol (which in musescore by default would reduce its duration to 67%).
Apart from that tiny detail, I would say the very ending presents no problem. Measures like 28-29 seem more complicated to me or M39. The passage starting at M50 seems like the most complicated one to perform a tempo. Judging by how it sounds, though, I would say there are some strange articulation symbol combinations. What does the slur + tenuto + stacatto mean in comparison with slur + stacatto, for example? In some places, like that passage starting at M50, I think marcato would better suit the piece rather than an ordinary accent. Normally (so not an universal convention) marcatos in piano tend to mean the player must perform the note with a strong (sometimes stronger than the usual) short accent (normally by raising the hand out of the keys rather quickly).
Perhaps you did already know that, but just in case I give you a rather common example. In Chopin's Op. 18 you will find marcatos at the very beginning of the piece. These are put not as a replacement of normal accents but with a further intention.
Here's a video of it being played.
Though this meaning is ignored at convenience of the performer (which isn't bad at all), this behaviour I'm writing you about is evident here:
So in summary (sorry for the text density :B), I would say parts like these
may be better performed marcato than with a full accent, specially the 2nd and 3rd accented chords.
All in all, the piece isn't really difficult, but that also depends on the child, its level, and of course, the detail and care with which you want them to perform.
Kind regards,
Daniel–Ømicrón.