Reply To: How to increase HEADER of my blog?

It looks like you already have most of it done, right? If you still need to add the space to the top of the logo, you can add some padding to the .head-wrap like this (line 1877) –

.head-wrap {
    background: #303236;
    margin: 0 0 40px;
    padding-top: 15px;
}