328414 Create images using PHP

I want to create a dynamic banner. The first layer will be the background that is a real, premade, static image that has our company's name on it. The second layer is an image that we will grab from our server. The image location/name will be determined by the query string. If the query string is ?image=imagenumber123, then the image that will be pulled and displayed is imagenumber123.png. The the next layer is dynamic text that will be written on the background/first layer. This text will be determined by the query string. So, if the query string is ?text=some random text, then "some random text" has to be written on the background. All of this has to be saved as an image. I have done most of it already. I learned how to do it within minutes, but since I'm new to it, cannot get all three layers merged. Hopefully, someone with more experience and who knows how easy it is, will do this and not charge too much. Thanks, and I will select someone in a few hours. If you have a demo, please provide one. I provide 100% escrow. Edit: Please keep bids low, as I just realized that I don't really need to use dynamic images. I will use your solution if it's cheap, though.