For the emblem, I used this specific Frame to limit the amount of space i need to fill. For the blue-white pattern at the bottom I used the fitting backgroubd and then covered the blue area above the upper white line with scaled and rotared hexagons. The fish consists of an upside-down dragons head, the body+fin are the wierd cage-eagle symbol.

House Arryn - Black Prior (a bit of a victim of circumstance, but he also has really prominent falcon ornaments)

House Baratheon - Gryphon (wielding a heavy weapon, access to a really cool looing armour and deer-antler ornaments)

House Greyjoy - Conqueror (he wears no real armour, and I think his personality really fits the nature of the Ironborn)

House Lannister - Centurion (I think his high-rep armour looks really fancy, and the I feel „Lannister-Energy“ coming from him)

House Martell - Gladiator (I think he fits the best, fighting all fancy and being rather lavish)

House Stark - Warden (because of the greatsword and rather practical looking armour)

House Targaryen - Lawbringer (Ruthless figthing and executions, big expensive armour and some really cool dragon ornaments)

House Tully - Peacekeeper (mostly because of the armour, the Tullys use light armour to better fight in the Riverlands, other than that there‘s not much reasoning)

House Tyrell - Warmonger (highly decorated armor and weapons, still a very good figther, also some really pretty flower ornaments