Great job, nice choice of photo!
There is an odd shadow on the RH side of the ceiling which you may want to adjust.

Perspective on black baseboard is wrong, upper corners don't match up.

The water room contrasting with the land view through the French door is a nice touch. The white and red thing with the weird perspective on the back wall is discombobulating, however, not to mention the odd right wall. The stool seems to be lit from the lower center but that's not evident from its shadows.

Thank you. The red and White thing is actually steps in fluorescent orange and the White the side of the pier in the original pic. I'll try and do something with the stool - thanks for your help.

shouldn't the top of the lighthouse follow the ceiling angle?

congrats