Sketch 2 is based on a simple I VI II V progression in the A section with a contrasting I i IV VIIb7 progression returning to the home key in the second four bars.
I think this is a cool little melody with a lilting feel to it. It has a bit of swing but this could be worked on more. I find the MIDI swing setting very fake and sound not much like a swing feel at all. Anyway, I think this piece has some promise as an idea for a larger musical foray in the future.