The posterized sky is a very cool touch. With all the empty space in the northeast quadrant, I don't see the need for the text to encroach on the cross atop the church. Making "Malta" bigger or a different font might be more 'postcardier.'

Text should be larger and white against a dark background. Not a very exciting font anyway.

Pumping up the saturation really transformed your start photo into something compelling. The ship on the horizon adds depth and tension with the tropical oasis of the foreground. I think the text needs to stand out more, however. Bigger (overlapping the palm trees a bit) and brighter (picking up the yellow in the menus, for example) would help.

Beautiful place

Man's face is way too desaturated compared to the girl. Font choice could be better.