Hello!

Let me begin with saying that I'm a beginner with 3D-printing. I built my Anet A8 just a couple of days ago. I'm using Repetier Host with Slicer.

Layer height: 0.2
Nozzle diameter: 0.4
Nozzle temp: 195
Bed temp: 55
Material: PLA

Take a look at the whistle and the cube. Even though the cube looks pretty much perfect, the whistle doesn't look good at all. What settings should I change to achiev better quality?
Picture: http://i67.tinypic.com/15pn0nd.jpg

My second issue is with the top layer. Take a look at the cogwheel. How can I increase the amount of fill in the top layer?
Picture: http://i63.tinypic.com/29axro0.jpg

I really appreciate any help, thanks!

/Simon