blend the google ad above the posts [background=#EEEEEE link=#003366], better meta information, either prefix all your posts with 'blogger' or something blog related or change your permalinks or categories ['general' is not a necessary kw in your links], add vids/images [something to PULL the readers in...it's a little bland right now]...it's nice; play around with the ad sizes though--those banners look nice and all but the blocks sometimes better ct
drive traffic. that's all you really need to do if you are going on adsense alone, but i'd recommend adding amazon too. amazon pages and posts and banners; will earn you more.