Your images are quite pertinent to the content, especially in light of your captions. One thing to keep in mind is coherence when formatting your captions. When I see the caption appear at the bottom of the image in two of the three images, I assume that the third image (which actually appears on a rollover) does not contain an image. If I didn’t check this, I’d have missed the caption and assumed it was not present. Additionally, ensure you investigate how to align you images with the text as this produces a much more easily read blog post.