Now, as it's supposed to show on the HTTP errors (404,403, etc) you create a new blade file in views/errors/ with the name of the error, let's say it's 404.blade.php
And now, as you're going to use the code that you already wrote extending it, you just put the next code in your file
Code:
@extends('layouts.errorsmaster')
@section('title', '404 Error')
@section('description') Content not found, noob @endsection
And your result is the page
It's a vague description of the potential of blade, but it's awesome.