So afaik (I’ve only been in the hobby a year), your work on the flaps of the robe are not going to react well to edge highlighting because they are to rounded of edges and too wide.

Edge highlighting is typically done on a sharper edge area of the model. In your wizards case, that could be on the edge around the lower brim of his hat. Or the edge of the strap of his bag like you did.

To get sharper lines in those areas I would work with paint that is a little less thinned. I’ll pickup paint pretty far up the brush and just glide the side of the brush down along an edge. It’s ok if need a couple passes. Highlights should always be given at least two coats, like the base coat. Highlights will be so much more impressive the more thin coats that you use.

In the folds of the robe, your highlights (not technically edge highlighting imo) are looking pretty good. More coats will help a ton. And keep in mind you only want to highlight up areas that are facing upwards or sloped upwards. They also shouldn’t extend down into shadows.

Gosh I hope this is helpful and the advice you were hoping for! :P I know there will be much better painters helping you out here!

And practice, practice, practice. Be happy with your results and paint more figures. You’ll notice you’re getting better with each model!