As soon as I finished adding the required amount of substrate in, I tried to play around with my "new" set of rocks and soon decided to try a mountain-type of scape.
Front shot of my new Rockscape
At another angle
What I didn't like about this scape was the sloped front substrate, which to me spoiled the look of the scape from the front. I then ask Jerome, Terence and Roland to critique my Rockscape again. They said it was quite good and some minor adjustment had to be make to make it look better. Soon, I did make some adjustments and then I realised that I didn't really like this Mountain look.
Then I rescape my tank again and had a completely different look from what is shown above. I decided to follow my instinct (which is bad) with the rocks arrangement and decided to stay with it. It looks better to me, at least the substrate was quite levelled and now look like a valley in the middle.