Blogging Changes - I Need Your Help!

Hey y'all.  I know I've probably been really confusing with blog changes, so I wanted to take a moment to share what I've been up to here and ask you for your advice.
  

As a new blogger, I look around at other blogs and see the cool things they've done and wonder, "How do they do that?"  So I experiment with page breaks, backgrounds, fonts, and all that other stuff that comes with keeping up a blog.  Really, y'all, there's a lot of things you can do with blog design.

The design of a blog is very important, in my opinion.  Do you ever find yourself liking a blog more because of it's design?  Sometimes a blog design is using dark colors like navy blue and black, and sometimes they're lighter colors like sky blue and blush pink.  Personally, I like the lighter colors.  I'm not saying that I don't like darker colors (one of my favorite colors is purple), I'm just saying that I think lighter colors add more detail and softness to a blog, and especially with my blog title.  So I have been trying to experiment with different colors on this blog, and unfortunately, the last design just went crazy so hopefully I will get that changed soon :-)

The fonts.  Serif or sans-serif?  I can't decide.  There are so many different sections on the blog where I have to pick a font (the title, right side bar, post title, date and gadgets, to name a few).  I am trying to figure this out.  To keep it less complicated right now, I've been keeping the blog and post titles the same, and a specific font for blog posts.

Okay, so I know you're probably annoyed with such a random posting schedule right now, so let's get down to business.  I am thinking twice a week to start.  If I get overwhelmed with neat blogging ideas, I'll up it.  And I am thinking of blogging on Mondays and Thursdays.  This is not definite yet, but it's what I'm going to aim for.

Blog backgrounds: just an abstract design, nature, or something specific?  I am not a nature girl.  At all.  But I like the nature backgrounds.  Some of them are breathtakingly beautiful.

I was debating changing my blog names to something clever.  I enjoy crafts, but my real passion is anything to do with music, piano, and composing.  Yet, I mean, sour cream is a huge favorite of mine.  I am at loss for another name.

How many posts should I keep on one page?  How do I add tabs up at the top (like 'about' and 'home' and 'contact')?  Should I keep the page breaks or not?  What fonts should I use?  Should I use nature backgrounds when I'm not even an outdoor person?  When should I post?  My favorite colors include lighter shades of blue, coral, gold, and purple.  Should I consider using those colors in my blog?  What 2 or 3 colors should I use for my blog?  Should I consider changing my blog name?  If so, what should I change it to?  What else needs to be added or removed?

I'd really like your feedback, so please leave me a comment.  You are more than welcome to respond to any and all of the questions above.  Your advice would be greatly appreciated.  Thank you so much!