* 'Refresh' neither looks like a refresh icon, nor has a label
* The fade on the right of the gallery implies you can scroll, but this isn't possible
* The generated logo + icon pair wasn't immediately noticeable (the first image is the icon without text, and the first icon isn't guaranteed to be noticeable), possibly generate image with text + logo on a transparent background and put it above the 4 sample images.
* Your input box doesn't look like a text box
* The 'enter' key doesn't work in the text box
* 'Refresh' neither looks like a refresh icon, nor has a label
* The fade on the right of the gallery implies you can scroll, but this isn't possible
* The generated logo + icon pair wasn't immediately noticeable (the first image is the icon without text, and the first icon isn't guaranteed to be noticeable), possibly generate image with text + logo on a transparent background and put it above the 4 sample images.