[Newbie] Milocker themes not fitting screen and Icon sizes

[ContemPlato]

1. I just downloaded Milocker. Looks like it's the one I've been looking for except that the themes in it don't fit my screen. :/ Is there a way around this?

2. Is there a way to edit the icon sizes on the homescreen? Also adjust its spacing (e.g. If I set the homescreen to 3x3, it sets the icons too far apart for my liking)

Thanks in advance!