lots of guide here on the forums I know @BrunoSupremo has some good tips in his A noob builder learning new building tricks
At least i use a few of these but he put em on paper. 
But i guess i could think of a few other things i tempt to do like double walls, so i can make patterns in walls with windows. Blocks around the base of tress to control their size…
i tried to write bit of a guide how i design random houses here Anyone has a good building tutorial or tips?
But lots of other great posts on tips and tricks with a few searches or just looking at what other people are doing for that sake 