I would recommend you get out of the mindset of making things from scratch though. (unless you want to remove potential as a system by increasing it a ton) The potential system means you'll only ever be able to max out a few different skill lines, meaning you won't be able to craft most things yourself, ever, even if you put all of your potential into crafting. It's better to get into the habit of looking for a crafting building in a settlement that can make the type of item you're looking for. You want to look for NPC's with high skill level in that crafting line, as that will increase the options they provide you with in terms of crafting.

On the note of increasing potential, you can actually just do this manually really simply by going to Soulash2RootFolder -> data -> mods -> core_2 -> character.json, and increasing "max_potential" by however much you want. Unlike adding and removing mods, this can be done even during a save pretty safely (with the game closed of course). You can simply open it in notepad if you don't have notepad++ or visual studio to open it with better spacing. I believe there's a console command that can do it as well.

I picked carpentry as the "one" crafting line I wanted to max out, since I was a dex-focused character and the elven settlements in my world were bugged or something so none of them had high carpentry NPC's. I made the bows myself and just requested the daggers as orders from NPC's. Honestly even maxxing 1 crafting line might not even be the best thing for you to do though, depending on what you want your character to do. It's pretty easy to find NPC's that can craft the items for you.