If you’ve never made shoes, you are probably a few years away from being able to do what you are trying to do, and that’s with a lot of serious study. There is so much more to it than making a cover for your foot.
i learned a ton in the crispin colloquy, there’s a FB footwear makers forum.
the best book you can buy is bespoke shoemaking by Tim skyrme.
You can use a singer 31-15 or 31-20 to do almost all the upper making.
a shoe patcher leaves marks and doesn’t leave stitches looking very nice.
expect much disappointment and Frustration. It’s possible, but not at all easy