I agree, you should have laid low until that deer moved and never shot. You are going to encounter so many situations where you'll see deer right at dark. I usually take a check in my stand by pulling back my bow looking through my peep and visualizing a shot. Last night was my first night out and I had a deer walk right underneath me at dark. I didnt even bother moving because even though I could have spit on this deer there is no way I would have been able to make a ethical shot. Im not sure how dark it was when you shot but just keep that in mind for next time so you don't spook him and that way you have a chance catching him coming through during lighter hours.

-Sparrow