I've been wondering about upgrading weapons for example could you first upgrade say a sword and dagger to become moon touched first and then upgrade to a +1 and so on?
Will either need training in the Arcane proficiency or the Smith's Tools Kit proficiency but sounds very possible, how would you look at that?
Start with a high quality sword. Alternatively, a regular sword that has been touched or graced by something thematically appropriate.
Engrave the sword with appropriately themed designs, possibly with inlay of silver wire.
Perform a ritual at the new, waxing half, and full moon.
Spend the appropriate amount of coin in material components.
Research how long it takes to engrave metal and extrapolate to a sword blade's worth of area. To get something really nice, with inlaid wire, probably a couple weeks to decorate roughly half the surface area.
Add 15 days for the lunar rituals.
How much coin? For grins, since a +1 sword is such a basic yet highly useful tool, and we have no real-world comparison, let's say 1000gp for "market price". As a nod to economics (but only a nod) let's say that the total material cost is 60%. This does not include the cost for the sword itself. It does include the silver wire, incense, chalk for magic circles, renting two flautists to provide centering music, &c.
I don't know what moon touched is, so I can't comment on pricing. I would have the character have some amount of ritual knowledge, either proficiency in Arcane or Religion, as well as some training smith's / Jeweler's tools.