The accussative (the thing you make) in the first sentence wold be the noodles. The dative is an additional information "to whom" or "for whom" you make them. In the second sentence, you are the direct object that gets made ready, so you are in accussative.
That said, there are sometimes verbs that just demand a certain case for an object, regardless of the direct/ indirect classification.
That is actually a great question. Not because anyone needs to say that they are turning themselves into pasta, but rather because it illustrates how to construct such a sentence for when one might want to say something like, "Ich mache eine Geldbeutel aus einem Ohr der Sau."
Somebody else (OsziEcht) had the same mistaken notion two years ago. If you'll take a look through the comments, you'll see that mizinamo provided the German for that thought as "Ich mache selber Nudeln." I think "Ich mache selbst Nudeln" might also work for that.
But if you think your answer should be accepted, then answer the challenge that way and when you're marked wrong, use the "Report" button and choose "My answer should be accepted." Comments here are unlikely to result in the list of accepted answers being modified.
Saying that you are 'making yourself pasta' implies that you are creating it from scratch from flour etc.
Is that what this sentence is implying?
Or is it more that they are merely preparing ready made pasta (i.e. putting the noodles/spaghetti, spirals etc. into a pan of boiling water).
If it is the latter then you wouldn't say that you were 'making yourself pasta', you would say that you would be cooking / preparing or doing pasta.
I am making pasta myself is acceptable or I am making pasta for myself. The meanings are slightly different. The first case infers I am making pasta but not for my consumption, where the second one implies explicitly that it is pasta for my consumption. Nevertheless I got both wrong.
If you are saying die Eule should accept "I am making me noodles", then:
(1) No, it shouldn't. That is incorrect.
(2) You should make such suggestions using the "Report a problem" button and not here in the discussion area.
If you are saying die Eule does accept "I am making me noodles", then that is sad news indeed, because it shouldn't.