After lots of effort and hours of adjusting, I’ve managed to do it. I am very satisfied with the result.
The options are now on the left side of the page, and the thumbnail is generated on the right side of the page. I also made it so on smaller devices, the thumbnail will generate on the bottom like before instead of the top.
I had no choice but to render the image smaller than what was generated if your screen was smaller to maintain the position aspect ratio, but I made a disclaimer saying the actual image size is what you selected but may appear smaller depending on your screen size.
This took wayy longer than I wanted to, but was well worth it 
