find this:

body,
button,
input,
select,
textarea {
color: #4a4a4a;
font-family: Garamond, "Hoefler Text",Times New Roman, Times, serif;
font-size: 15px;
font-size: 1.5rem;
font-weight: 300;
line-height: 1.615;
}

Now for example if you need to change font size to 16px, change above code to:

body,
button,
input,
select,
textarea {
color: #4a4a4a;
font-family: Garamond, "Hoefler Text",Times New Roman, Times, serif;
font-size: 16px;
font-size: 1.6rem;
font-weight: 300;
line-height: 1.615;
}

Hi Dawn, you can use contact form to request theme customization.

I would like to ask:
1] how do you make the width bigger?
2] how do you make the navigations font bigger?
3] how do you move the header image upwards?
4] how do you change the font of the headers?

Thank you so much!

to remove slider, remove all codes between:

<!-- featured post slider started -->
<b:if cond='data:blog.pageType != "static_page"'>
<b:if cond='data:blog.pageType != "item"'>

and

</b:if>
</b:if>
<!-- featured post slider end -->

to changes background image, find this:

http://1.bp.blogspot.com/-diOT17QmHrI/U9Yz4QfG5UI/AAAAAAAAMSg/bjm9az_Zv0o/s1600/body-bg.png

replace it with your own background image.