This is an awesome boxwood(Buxus harlandii) belongs to a bonsai buddy in Kuching.
It's old enough, with good nebrai (floating roots), very good cork bark stem and branches. And how I wish I can have a material like that! 

      [attachmentid=4334815]

With his consent, I can post it up here with my suggestion on how to improve it's look.
My suggest is that to work on the foliage first. Changing pot will come later.
An extensive cut back is actually required to allow to grow back before shape.
Hopefully the following can give the basic idea how to do it.

      [attachmentid=4334819]

Cut become botak, something like this.


      [attachmentid=4334821]

Then allow it to grow back for 10 months to a year, feeding it with a little fertilizer once a month and water everyday.
It will grow to becomes thick mushroom shape bush, something like this.

       

Then cut away the small branches and expose the stem and inner part of the branches.
Trim the foliage canopy and let it grow for another 6 months or so.

        [attachmentid=4334840]

This time beside trimming the foliage, choose the branches  that you think that's not suitable to cut away.
By then it should have become quite awesome something like this.

        [attachmentid=4334864]

Hi Jerome.
Singapore is a fantastic country. No cave no mountain.
You are welcome n thanks for your applause.

Thanks BonsaiLeong,

I received it and love the mini buxus.

Hi ichiglance,

The specie you have is called Feroniella Lucida. It's a terrible thorny specie that even the thorns at the young shoots can hurt your fingers.
Not many people like to train this specie to become bonsai. I've this one growing at the edge of a low rubble wall but yet to have any intention of shaping it.
Although this specie is thorny, but it's foliage(leaves) has the characteristic of  natural flat shape.

     

As for your Lucida, it has a good old looking big stump. But the branches have grown very much out of order.
My suggestion is to cut and let it re grow and guide it in the shape you want with wires.

     

The idea is something like the following photos down loaded from the internet.

       

You can go to google, search for " Feroniella lucida Bonsai" to look for bonsai images that you think you can follow.

Take care your your fingers buddy, when you are working on it! 

Thank you BonsaiLeong.  I will research about it but I would settle the buxus first.

And Indeed... I hurt my finger when I bend the branches.

Oh oh! No. The name is Bonsailelong.

Hi snowlion,

I go direct to the points.

1) We don't usually wash away all the soil at the roots of wrightia or shui mui unless there is infection at the roots.
2) The black volcanic soil is too porous for this specie unless a lump of original soil is still kept at base of the tree stump and the volcanic soil is added to it.
3) Soaking the roots in water too long can drown the  plant. Roots need air too.
4) Too much exposed roots doesn't look good only like exposed skeletons.
5) Hope you have not cut and remove all the small hair like roots leaving only the big one. The small hair roots are the main absorbers of water and nutrient.

My suggestions.

1) Replant your shui mui with ordinary soil (ready mix) type and cover the roots up to the bottom line indicated.
2) Cut the top part as indicated.
3) Apply wound paste to the wounded part to prevent the stump from rotting. 

     

Hi Bonsailelong,

Can you share with me on my bonsai?
What else I should do to make it flourish?
I'm currently staying in an apartment.
You can give frank opinions.

Thanks.

Chinese New Year is around the corner! 

       

Hi Bonsaileolong,

Very nice. Wrightia too?
Happy Chinese New Year to you and your family too.

Kermit

Hi Bonsailelong,

Below is same bonsai which I captured different angle.
Specifically which part of leaves which I should pluck? I'm new to bonsai.

Thanks.

Kermit

Chinese New Year is around the corner!