The ZX-Paint program has the ability to import a jpg and format as a TS basic screen data in a .tap file.
I took a photo of the Superstar Baseball Game Box and imported as you can see it is a rough import:
The tricky part of graphics/colors on TS2068 – ZX-Spectrum is that each character cell (8×8 pixels) can only have one ink and one paper color. So that has some limitations.
After some editing to try and match the original better I have :