elladurham
commented
10 years ago The .gif is an acceptable format since they are flat, limited color images.
I agree with @JaidRose about the image names. Misspellings (specimen.gif) are a surefire way to set yourself/team-members up for issues.
Make sure you have a /styles/ folder for your stylesheet (don't forget to update the link).
Your images have weird names that won't be very easy to remember and therefore would get lost if you had more. Also they are static images but they are labeled .gif. Other than that everything is where it should be I believe.