Hi and welcome to the critique forum.
Firstly your PP is just right for colours, contrast and white balance.
Sharpness is decent in each of the subject matter, and it's clear the intent/subject of the images.
What the images lack is great impact.
Perhaps with the exception of #4, the captures are snapshot-like and unflattering, despite being well rendered. The lighting worked against your favour for #1 and 2, and #3 is a plain landscape that doesn't have an interesting point of focus - ask yourself what can I do to make this scene look unique, and not something everyone has seen and is bored of seeing as a photograph.
#4 on the other hand is a decent pano - the silhouette works well, the warm colors complement the scene, and the background formation is pleasant, and contrasts well with the sea and jutting wharf. Well done.