Help with tweaks to theme

Hi there,

I am having a few issues changing things on my blog and would really appreciate some advice please!

Thehappykamper.com

1. Header image used to align centrally but no longer does – I’ve tried uploading different sizes but it doesn’t make much of a difference. How do I adjust it so that the header image sits centrally?

2. I’d like to get the search icon on the header image to line up with the twitter and facebook buttons lower down on the header image. Ideally I’d also like to add an instagram icon. How do I do this? The position of the search icon is an issue on both mobile and desktop.

3. On the homepage, I’d like to remove the box under each post that says ‘The happy kamper / date / post category e.g. travel / permalink’

4. At the bottom of an individual post, there are numerous sets of sharing buttons! I’d like to keep the first set of 6 icons but remove the subsequent “like this” and additional facebook/twitter buttons.

If you need any info, please let me know. Thanks so much! ??