This will be a 960px wide rectangular illustration for a website. I'd like to receive a multi-layered PSD or PDN so I can make small edits if needed.
I really want to convey in a single screenshot what the product does, and actually depict a text message, not just someone using their phone. I think that showing a phone's front-facing screen helps convey that it's for short, SMS style updates and not for large updates. In one of the attached example, I tried to use something (Weather Alert) that is brief and basic enough to understand. Also noted in the example is my preference to show a website with an update/alert on it.
I would need room for a big headline and some other text above/below and maybe space for a button or two.
Existing concept can be found here: https://text2page.com (the entire area at the top with the green textured background). Please remember that I've abandoned this idea of sharing the width between image and text. I'd like to stack them. Study the page if you want to get an idea of how simple and lighthearted the overall feel is of the product/business.
Other than that, keep it cheery and be creative!