Not very technical, need some advice

Hi all,

This is my first post as I'm just discovering this theme. First of all thank you for developing it, I'm not very technical but love the results this theme comes up with for my blog (themuddyduck.co.uk). I have a few questions and I hope someone can help me (remember I'm not too technical).

Q1: Is it possible to move the header menu to align to the right? ie it's right most point is above the right most point of the search box on my site. If so how do I do this?

Q2: It gives a preview to my blog posts on the homepage, is it possible to have the most recent one expanded so it shows the full post when on the homepage and the other posts are shown as summaries?

Q3: In the summary view it shows an image for some of my blog posts but not for others. Is there a reason for this? And is there also a way of selecting which picture is used for each one? There seems to be a box around the images, is this there by default or did I do something wrong?

Thanks in advance for any help,
Gary