I think simply waiting for inspiration isn’t the best idea. As Tchaikovsky said, inspiration is a guest who doesn’t like to visit the lazy. Of course, there are times when a flash of insight comes. But often you have to grab yourself by the scruff of the neck and drag yourself to work :) I also sometimes go through many different versions of the same theme or the same piece. At times I’m amazed at how much changes from altering just one note or one duration. A theme that once seemed unsuccessful can be transformed so much that you almost consider yourself a genius and simply enjoy the result. So I think one should keep working and working. As for the appoggiaturas, no, the issue isn’t that the notes are too long or too short. It’s just that the notation itself, purely graphically, looks somewhat old-fashioned on the page. That’s how it was usually written in Mozart’s time. Nowadays it’s more common to write regular notes. For example, you could write a reverse dotted rhythm there, or a triplet, depending on exactly how you want it to be played. An appoggiatura gives the performer some freedom, whereas if you write out the notes, they have to play it exactly. But of course, it’s up to the composer. Your notation is by no means bad or wrong. Just unfamiliar. =)