Problem with tailoring skill ups

[Moosetoe]

Thanks, Daldaen.

One more thing:
As I get more skill-ups into Tailoring, I have a higher chance of successfully creating the item and, therefore, have a higher chance of getting a skill-up. However, the higher my skill goes, the harder it is to get another skill-up, right? I mean, at 160, I had an absolute shit chance of actually creating an item that has a trivial 175 points higher, but it was more like 15ish combines to get a skill-up. Now, 45ish skill points higher at 205, I am noticeably more capable of creating an item, but it's 26ish combines to get a single skill-up. At what point does the increased rate of success (and increased chance of getting a skill-up due to successfully creating the item) get "overpowered" by the lowering of chances to get a skill-up due simply to being a higher skill level?

..not sure if I worded that the best I could, and maybe it's a little abstract, but I'm just trying to plan ahead for materials.. Higher skill level, better chance to create the item, faster skill-ups, less materials to finish Tailoring ........ or, higher skill level, harder to get another skill-up, slower skill-ups, more materials to finish Tailoring?