Finished reading the article in the latest Trad Bowhunter mag that G Fred wrote about ground blinds.
Over the years I've grown to depend on them exclusively for hunting deer here in the NE for only one reason, I don't feel comfortable perched up in squirrel land, much better down with the chipmunks.
Anyway after experimenting what has worked better for me is.
1. the more natural looking the blind the better
2. never build a blind on flat terrain, way to easy to stand out.
3. Whenever I can I prefer to build them on the sides of hills, using the hill or rise itself as a natural backstop.
4. in the areas I hunt, laurel shrubs are all over the place, I always try to use them as a blind by snipping branches away and use the shrub as the blind.
5. Found at a local craft store, imitation looking laurel, wire tied them to sturdy stakes and I place them in front of me and fill any gaps.
6. get a comfortable seat, movement fidgeting will give you away.