1) Lovely sunset, but is it a lovley image? The problem is with sunsets is that the'rey amazing when they're blazing all around you, but not so much when stuffed into a 6x4. You need stuff in the foreground and sides that's nicer than the back of the car, some houses and a road. Sunsets are one of those things that make you feel a particular way, so try and include things in the picture that'll make the viewer feel that way, and focus on them. Presumably in this picture you're in some kind of urban place, it looks quite quiet so I'm guessing it was nice and peaceful. You could have run down a side-street to capture the sunset from a row of pleasing terraced houses, give people cosy home feelings instead of the main road an scruffy houses which makes people feel a bit anxious and depressed, probably
2) Landscapes are hard, you need something in the foreground to give the background context. The bike isn't close enough to qualify, it's just sort of nowhere. It doesn't add any kind of counterpoint to the scenery so it's just plonked there. The view looks great in real life because it's a huge expanse of countryside which has an effect on your brain; but on a picture it just all looks tiny so you need to trick the viewer's brain a bit to make them think of wide open spaces. By having something in the foreground it'll make the background feel further away and convey some of the feeling you had when you were there.
Also, you need to put stuff around the sides of the picture. If you only have stuff in the middle it just fades away towards the edges instead of being nicely framed. Look at other photos and paintings, see where stuff is in the frame and how it draws your eye and what that does to the whole image.
3) What's this meant to be a picture of? If it's the hill, forget it. Too far away, too dark. If it's the street scene then it's only filling half the picture. Think about what you want to say to your viewer when they see the picture. If you were writing a description of the scene instead of taking a photo, what would you say?
"There's something vague in the background, and then there are umm, cars and stuff, and some flats" doesn't sound great. If you want to show how it feels to be out in a warm mediterranean evening then go find some things that sum that feeling up.