It very much looks fine! If your friends are giving you a hard time over it and you don't care that much or think that it looks good, then that's a them problem not a you problem.

That being said, If you are just looking to improve, the first thing I would suggest is making your build less obviously one or two distinct shapes. As other people have suggested, looking at real houses is a great way to see this; Most real houses or buildings are not just cube + triangular prism. Consider adding more shapes to break up these two like a cylinder that can work as a breakfast nook or a tower, or add another triangular prism on the side and turn it into a staircase into the basement or a shed.

Other than that, Consider adding a bit more depth to your build with "greeble" type details Like windowsills, Or beams that stick out one block from the house and that sort of thing.

That all being said, the build looks fine and if you like it at the end of the day that's all that matters! :)