I finished the inside of the garage window. I wish I had leveled the side framing with some shims before getting to the trim because the hole in the wall isn’t square. I already had the framing nailed in when I noticed, so I didn’t want to mess with it. I made sure to put the trim on square though. Learned a good lesson and it looks fine for a garage window.
The blind no longer fits, but I’ve been enjoying the extra light in the garage, so maybe I’ll keep it as is.