You have captured a nice picture here regardless of the camera.With that camera in particular you should be able to get some good results. I use a Canon S60 and would someday like to get a DSLR but it's not in the cards for me right now.
BTW: I use "unsharp mask" from Photoshop Elements 3.0
The settings I used for your picture were
Amount - 150%
Radius - 0.5
Threshold - 0
You can play with different settings but I pretty much start with that and adjust up the Amount and Radius to get a desired effect.