I started learning about photography earlier in the week by reading some online tutorials and lessons. I've also installed the CHDK alternative framework to my camera. 

I took [this picture][1] earlier today using my Canon Powershot SD1000. I played with the raw file on GIMP, mostly with the balances and curves, etc. I must admit I don't know what I'm doing when it comes to playing with the raw file, except I just went for what looked good to me.

![pic][2]


Please provide information on how I could've improved my picture.

Second, there are a few settings on the chdk menu that I don't quiet understand. What do these mean?:

- Shutter speed override (varies from 1/100 to 2048) and factor (varies from off to 10+) depending on shutterspeed enumtype (which are EV step or factor)
- ND Filter state (off, in or out)
- Override subj dist value factor and value factor in mm
- Override isovalue and its respective factor


  [1]: https://i.sstatic.net/JslUd.jpg
  [2]: https://i.sstatic.net/JYdMQ.jpg