Excellent work considering these are your first few minis... you seem to have great brush control and understand where highlights are required... next step for you is shading, will give the miniature depth and clean up the lines between colours... my advise is just keep painting and maybe look up YouTube to get learn some new techniques to practice... well done
Going to give some advice to try and help you a bit... ;)
Deepen your shadows, brighten your lights, put a background on your gallery pictures (so the viewer does not get distracted by a vibrant pink or pots in the distance...), Choose wether to soften your transitions, on your following miniature try to add "texture" to the leather, or grain to the wood.
Look over to internet or even in these forums, you'll find an almost neverending flow of videos and articles on how you can do "x" or "y", but most of all, have fun and don't forget you are doing this as a hobby!
It is not easy, but if these couple are your third and fourth you are following the right path.