They're curved, alright, but the curves appear strange. It would take a lot of thinking on the architect's part to come up with a wall like that in real life, and as it stands, it seems really odd if you're taking a perspective standpoint. The wall's upper edge suggests that the wall is sloping down and out from the house itself (which makes sense from an architectural standpoint, so I'm going to assume this was your intention,) while the lower edge just makes it look as if you're trying to go for a 3/4 viewing angle, and that simply doesn't agree with the rest of the screenshot. It's mostly the sudden jutting out from the top then tapering into a vertical that does this; the eye kind of simplifies it into a diagonal.
If you're going fora "wall sloping out from the house" method, start out the edges a little flatter at the top, so that it doesn't look like you're going for a 3/4 view in denial of everything else you have.
Also, those windows above the character seem awfully small for people of her scale to look through and live behind in attic rooms.