For your second mini, this is excellent! Both of your techniques just need more practice.
Maybe try a little bit less paint on the brush when you edge highlight. You can control how much paint you have on by painting your thumb, or unloading some of the paint onto a paper towel.
You can make some improvements by adding some depth to the armor with some washes. A brown or reddish wash like agrax earthshade, or seraphim sepia, or who knows maybe even reikland fleshshade, can add some interesting tones to the deeper parts of your armor. You can then bring back some of the gold by painting gold on the raised areas, and then edge highlight. The same can be done on the steel with something like nuln oil or drakenhof nightshade instead.