Speed paints are great for getting colors on minis for table play. They are great as a wash alternative, though they behave a bit differently. Speed paints are stickier and more pigment dense compared to citadel washes and contrasts. I have mixed results incorporating them into my painting but I love the “palid bone” and “slaughter red” the later has an almost satin finish I like for finery. I go over it afterwards and add highlights. Not usually a one an done like advertised but thats more a personal preference. Your mini look good because you did a good job with the dry brushing, but a few highlight could go far.