Picutures too small in links

Hi,

On my site, jcopro.net, when you click on a photo, it goes to a page where the photo is the same size. Does anyone know how to make the linked photo bigger?

Here’s an example, click on the first picture:

https://www.jcopro.net/2011/02/28/how-to-remote-control-your-camera-with-20-in-parts/

after the second pic, you can then blow it up, but I’d like the second pic to be bigger.

Any help would be appreciated.