dude, few colors isnt it. HLD has practically no shading. think only in solid colors, like not more than one per limb
Their taurus guy sort of looks like yours but if you want to get the style dont go for the least HLD characteristic character first. Go for someone like the drifter, someone flat and with no shading, focus on diferentiating the limbs by putting differently colored details on the guy
plus your guy kinda looks like a buffed up fireman(from megaman). why are you doing superhero underpants in HLD?. try something with glyphs on it, cloaks or medieval armor
focus on getting an intresting sillouethe first and foremost. drawing only in one color with no outlines for starters will help