I'm working on this outfit and need to make some boots for it. My original thought was to make thigh-high boots, but then I decided the skirt was too long. Which would look better, knee-high or ankle-high boots? Also heels or no heels?

Right now she is in dire need of footwear, and what she has are with heels, so I vote for no heels. 

No heels.

You can conform LF1 shoes to LF2 and morph brush for foot shape.

Knee hgh, no heels

Both, then you have 2 products......

With the outfit I think what would work best would be ankle boots with a very light little heel

As someone who switched from wearing Dr Martens shoes to Converses a few years back for foot and ankle health reasons, I think I have a different idea of what "no heel" means. So, I'll say ankle boots with standard "flat" heels. :-)

Yes, I should have specified low heels rather than no heels. I'm not making hightops

I like Topol's idea of a low heel for the ankle-high boots, though the outfit looks everyday sporty (think work).  Then again, with the right fabric, the outfit could look a little dressy (out to dinner), so a very flat heel might not look right then.

As far as a high boot goes, I don't like the look of it right up to the knee.  I think the middle of the widest part of the calf would be high enough . . . say about 2 inches below the knee.  That way they wouldn't interact directly with the outfit.

Too bad she’s French. If she were Australian, you could just give her some flip-flops (a.k.a. thongs).

I wanted to see what each looked like so I made both. I may add some details.

And higher ones

I voted for ankle boots, but I do like the knee-high ones with this outfit.

I wanted to see what each looked like so I made both. I may add some details.

First things first, the outfit you made looks really good. Casual but in not boring. I eager to see the final version. The form of boots you made don't really fit to that outfit, at least in my opinion.

Since this outfit is something for the more sunny, warmer days in the year, I would vote for flat sandals. If Heels are unavoidable, I would choose wedge heels. They are my personal favorite form of heels, from the esthetic point of view.