I find that one has to select subject matter that is compatible with pinhole. Same with zone plates.
Pinhole has strengths and weaknesses compared to lenses. Too often I got results that looked like conventional photos that were disappointingly blurry. Yet with certain subjects, people respond enthusiastically to the blur. (In general, on pinhole forums (fora?), not necessarily to my images :O(
I found that relatively large subjects at close distances are very compatible with pinhole's DOF strength. I was always unhappy with small-detailed subjects at infinity. I do not have zone plate figured out. I have several but don't 'get' alot of the ZP images many people respond favorably to.
I think wide to very wide angle is my favorite look with pinhole. Normal angle of view pinhole (converted cameras at same spacing as lens) for my experience has resulted in too many images that looked like poorly done lens work. :O(
With wide angle you will probably find that, in accordance with the advice/adage we Pinheads dispense, you just can't get close enough. If you think you are close enough, get closer first.
Using converted cameras viewfinders on wide angle shots, as a rule of thumb I compose in the viewfinder, then cut my distance to subject in half. I haven't pushed that any further because of eyeglasses & parallax.