AlaskaWebDesign

You submit your form to the same page. Have:
 
if (isset($_POST['input_name')) {
 
echo your paypal checkout form with all inputs hidden and php taking the submitted form values and filling in the paypal form values;
 
echo a javascript function that submits your newly echoed paypal form;
}
 
That's how without writting out the actual code.

You could create the cloud effect with the photoshop Difference Clouds filter. Layer some black brush dots on top and you can easily create the image you've linked.

Did you do any off-site SEO work on it?
 
To be honest, this is pretty normal. Google ranks new stuff pretty highly and then over a period of a month or two, it finds it's level and then settles in at a position.
 
I see it happen all the time and, as frustrating as it is, it's nothing you've done wrong. You just have to carry on promoting your website and keep building up the domain authority