Personalizing Image - add text to lowres image and generate highres print ready image

Hi,

We are trying to create an App where we let our users upload images, write custom text and then print the images on wooden boards.

We are trying to use the Graphics Mill API to accomplish this task. In this regard, we have a few question and would appreciate if you can answer them for us:

We upload an image in our mobile app, depends upon screen resolution and aspect ratio a new image with different size is provided to user for personalizing.
After user inputs the custom text on image, we would like to know whether following things can be possible with Graphic Mill API.
Can we input this modified image from app to any Graphic Mill API and scale to its original image size, and aslo read the custom text positions (X and Y), font style, font size, and color.
If image scaling is done at app end and if we provide the original image size, do we have any API to read the custom text positions (X and Y), font style, font size, and color.


Also, if you believe there is an easier way to do this, please point us in the right direction.

Thanks.