Interior Tip:
When making interior, sometimes it is best to not use the entire space your exterior gives you, usually when your exterior has an odd shape, or tons of ramps, etc.
Example:

Getting Ideas for buildings tip:
[Original Thread for Getting Ideas For Buildings Tip:
http://forum.blockland.us/index.php?topic=218353.msg6222692#msg6222692 ]
Google this:
http://bit.ly/S7x4W8Replace buildtypehere with what type of thing your building
Examples:
skyscraper
spaceship
house
etc.
Then click
"images"
If you're still not getting good results, try adding "modern" to the front, or whatever age it is.
Examples:
modern
future
medieval
prehistoric
ice age
etc.
Fast and Easy PERFECT alignment
Pretty simple. Let's say you place a 32x32 baseplate down, and you want a speaker in the middle. After placing the baseplate down, just switch to Music Brick and then move it up until it's on the plate, then plant.
100% perfectly in the middle.