Not to be rude, but if you don't bait and dont want to, the suggestions that come from baiters won't mean diddly in real situations.
Every situation is different. Try to draw when they are on the move, looking away, or head behind something. Wait till something distracts them, etc. A lot of times they distract each other. Especially bucks. Once a shooter buck comes into view anywhere, other deer typically put all their attention on him and scatter or cause enough commotion to allow an opportunity to draw.
There is no set way to do it though, that's what sets real bowhunting apart from everything else.
You even have to be aware of other animals like squirells and chipmunks that could give you away with barking or chirping.
It can be and usually is EXTREMELY difficult to get drawn back. Single deer are the easiest, but where there is one deer, usually more are nearby.
DropTine had some good advice about the motion. Getting the bow into position VERY SLOWLY or sometimes very quickly are important. Than make the draw with as minimal movement as possible. That is why it's critical to shoot a bow that you can draw very easily.
Remember too, usually extremely slow movement wont be detected as easily as quicker movement, BUT...sometimes you have to just make it real fast. Like turned head or behind a tree, bang, draw the bow fast.
That is where letoff helps so much.
When hunting with trad gear, it gives you even less opportunity because you have to pick the time when you can draw and shoot. There is no letoff! So unless you're a really good snap shot, it is even harder. Which in my book, equates to more fun!
As far as being too low, a lot of people can get it done on the ground without a blind, so 14' or 17' or 30' helps, but if you have NO cover and draw at the wrong time, height usually won't help.
Choosing good cover, a concealed location off to their side where they really shouldn't be paying attention to you and a knack for picking the perfect time to draw are all parts of becoming a real bowhunter!
Sometimes you never get a chance to draw. That's what makes bowhunting so much fun!
Good luck!