Set it up so the deer walk by you; not where they are walking towards or angling to you. Even though it's a "blind", the deer are not. LOL! They will react to it and brushing it in with native vegetation will help considerably. Anything to break up it's outline and presence helps hide the blind. If you could get by, it would help to have a limb or two over the open spot you'll shoot through because it will be black. The blackness will alert the deer as that too is unfamiliar. Speaking of the black interior, scrub the camo and wear black clothing as well to help you blend in your blind.
Find yourself a good chair to hunt from. Spare no costs. If you're uncomfortable your sit will not be fun. Find something that is silent as you don't want it to squeak at the wrong time!
When you are on your chair, practice many times bringing the bow up and coming to full draw. This will help prevent any last second mistakes that you may not have known unless you did this. Working out the bugs seconds before the big moment is not the right time to discover your stabilizer is hitting the window shelf. LOL!
The last part many don't have the luxury of and that is pre-setting your blind days or a week or more ahead so the deer get acclimated to it. Doing this puts your blind at risk of theft.
This advice goes for bowhunting especially, but if using a gun, then the principle is similar except you can forgo some of the brushing in because your shots will be longer and the deer can tolerate the blind when it's further off.
iSnipe