Firstly- congrats on finishing your first game jam! For a first one this one is really good!
Graphics: You only get one chance on making the first impression. The best way to make a first impression is with a fully animated, flash animation style, intro. Brilliant! The rest of the graphics maybe lack the "fully animated" part, but have their own style.
Audio: I like how you put sound effects under everything. Background music fit the game. Only nitpick is that the "dialogue" sound was a bit loud/annoying.
Gameplay: I like games like this. The ones that make you read through bunch of hints to figure out the solution. From the other hand- in game jams the games that do the best are the ones that are easy to pick up. Also- the continue button in the main menu doesn't do anything- it just starts the game.
Btw- I always like some narrative, so your game definitely gets some points here!
Theme: Hmmm... I think you could lean more into the theme. The games that get the highest notes in this category are those, that build their gameplay, atmosphere, graphics with the theme in mind. In "Last Words" the "stargazing" feels a bit like an afterthought. Maybe you had an idea for a game before, and tried to fit it into the theme (we've all been here, with various levels of success).
Over all- really good debut! Keep it up! The next Goed jam is in September and I'd definitely like to see your work there! Keep it up!