I checked out your site and it looks pretty good. There are a few changes that may help improve it for you. I noticed that the flickr photo stream that is on the right sidebar doesn't seem to include relevant images to your niche. You could try adding a few or maybe just delete it. Also, have you looked into creating an email capture to get subscribers to your blog? It is an excellent way of building a list that you can market to for years. Last thing I noticed is that in the Author bio at the bottom middle of the footer, the wording seems a little off grammatically. Maybe try cleaning this up to add a more personal touch. Other than that, it looks good. A few more how-to's, free tips and tricks, etc. would be good because those cross market to Pinterest really well in that particular niche.
Is there any reason that you didn't try and get a .com, .net, or .org domain other than the money? I think that as you start earning more from this website, try reinvesting in a second domain. You could set it up in the same niche but maybe with a slightly different focus and link the two together. If they are relevant to one another, you will improve rankings for both. This technique works really well for me in my Amazon niches as I tend to build several related websites that link out to one another and I also guest post across my blogs. Give it a try and keep up the good work!
For now, don't concern yourself too much with rankings and webmaster tools. You could drive yourself crazy looking at those numbers and stats each day as pages move up and down in Google. Instead, spend that time in creating more new content. Schedule your posts too! I write articles on Sunday and schedule them to publish on Wednesdays and Fridays. After you start seeing your rankings stabilize for certain keywords (especially those longtails that will begin to rank on their own), go back and tweak your articles to improve traffic and conversions.