i thank the kind gentleman who helped me yesterday and the day before. i 'm still at it...
most of my photos & artwork are 16" square and i add 2" colored borders to the bottom and top so they fit 16" X 20" black exhibition frames. all art and photos are interchangeable (this is iPad Pro 10.5" 2017).
i have managed to create some 16X16 images i enlarged to 16X20. the borders are white. i just can't find how to color them, or how to make the images 25mb max, without losing 300dpi. (same as the 2'X3' posters).
thanks to the gentleman who was so helpful and showed me where to find so much information concerning my images after filter treatment. they would return to their original state just by touching them. thank you all for your help.
ali black