I can be flexible if you decide to change your mind. No pressure though <3
This is a workflow for old-border cards with Card Conjurer that I sent to a friend some time ago. Maybe it's a first step?
(
https://cardmaker.onrender.com/).
Example for Guide of Souls
1. First the frame and print margin:
FRAME - Main category: Old/Misc Sub category: Seventh Edition -> White Frame (double click)
MARGIN - Main 1/8th Inch Margin -> Pick first one (always try with a double click if not specified)
2. Art and Artist credit
ART -> Enter card name in search bar (Artist credit automatically)
3. Add Text
TEXT (manually) - Mana Cost -> letter "w"
- Title + Type + Power/Toughness -> manually
TEXT - Rules Text -> copy paste from Scryfall -> clean up: remove space between paragraphs. If 3x Energy symbols break textbox -> add line break ({lns}) before to move it to the next line.
That's it! (Optional: Set Symbol)
EDIT: I think it's easiest to just try to recreate some normal magic cards and then, once that works, try some more challenging designs like sagas, planes walkers, etc.