I think that dotted eighth note and sixteenth note should actually be a dotted quarter note and eighth note (I took the “stormtrooper” notes to look like half notes).
The rhythm is fine but the key is wrong. Should be G minor starting on G (G G G Eb Bb G) but I guess it is fine transposed
They are quarters though
Cute idea, not quite right.
If you’re playing the Imperial Death March on those notes, you’re going to need an F# in the key signature. I’d order this if it were accurate. 
Nope, it’s actually correct as is. This is probably the geekiest thing I’ve ever written on woot, but this theme starts on the third scale degree in the commercial sheet music; in other words, the theme is in Phrygian mode, not in a minor key. The graphic is musically correct. (And the transposition is of course irrelevant; it’s stated at many different transpositions in the movies. I assume the designers chose the simplest possible transposition so the most people would have a chance of recognizing it.)