Don't use copyrighted images/materials. Just use royalty free images and give the credit to the image owner if necessary by linking back to the source .
You need to add contents instead just 3 posts. After adding about 15-20 contents build backlinks for your blog, and finally add your adsense code. You can try to place your ads at top of navigation and at the end of your post. Good luck !!
You blog is nice but i suggest you as per my own personal experience of 2 year when i am using blogger blog it's need to hard work in blogger to get traffic to you blog. I suggest you start your own self hosted blog and work on it it's helps you to drive traffic and in seo use wordpress and TLD. I hope this is useful for you.