Hi Hui,
I can see you are really dedicated to the “hobby”. Having your camera with you all the time is the way to go. Taking good care of your camera and never have it stolen from your car is the big challenge here in SA. Never leave it in the car – keep it with you!
What you are doing might sometimes look “foolish” to others (running out of the restaurant to get a shot) but you surely show a lot of passion in getting the shots. You are on the right track and your images are getting better and better. I really enjoy looking at your work.
Sometimes the composition might not be that great but you are making progress.
For example: In shot #3 you could have considered a different composition to make that nice fence lead the eye into the image towards the autumn colours. No 2 is a lovely shot. the lines leading my eyes straight to the city high rise buildings.
The colour and exposure in your images look very good.
You will get to the point where you will no longer take the shot on impulse but visualize what you want the image to show the viewer. At that point you will start planning the shot and be more careful of what is included in the image, you will be more careful of what you frame in the viewfinder.
Well done Hui, it is a matter of time and getting the experience and you will be capturing timeless masterpieces.