How to build a house in sl?

In order to build a house in sl,you have to make a floor for it,first.And keep its sizes in mind because the walls are going to be appropriate with it and each other.So you have to be careful or it won't be a nice house.After walls,the roof can be put on the walls.But in my opinion,the most enjoyable part are choosing the colors and decorating inside it.You can put some nice blocks with the colors you like and coherent with the walls.After everything is done,you can go outside and take a photo of it as I did.