For the second example, I start with a Gmaj7 arpeggio, and move to Am with chromatic passing tones. Towards the end, I add in the raised 7th to give a different feel.
With the exception of a slide in the first arpeggio, I use straight alternate picking. This one is very easy to swing!
For an even more Howe'esque sound, throw in some melodic minor in the second bar.