Nice res! Couple of points on that - you need to keep your tap straighter
If you look at the top barb, it is leaning slightly. Even a slight lean will lead to a leak. A cheap way to keep the tap straight is to get a block of something (preferably hard like aluminium/steal or acrylic, but MDF would do if need be) about an inch thick. Drill a hole in it with a diameter of the outside of the tap. Then position this over the hole you are tapping and clamp it down onto it. This will keep the tap straight when you start cutting (the start of a thread is the hardest part to get straight because the tap wants to take the easiest path - out of the hole!).
Now photography - the shots are much better than your old ones! Nice job
-Make sure self-timer is on for about 2 seconds so your hand pressing the trigger doesn't jog the camera.
-Make sure you are focused on exactly what you want - selective autofocusing or manual focusing can be used to achieve this (normal autofocusing where the camera chooses the point to focus on is never really precise enough).
-Brighten the photos up a little bit - are you using it in manual mode? If so, make sure your ISO is low (if you have it too high you get noise - if possible, keep ISO on the lowest possible), then keep the aperture low. You can then make your shutter speed shorter (increase the denominator of the fraction) which will allow you to get more depth of field - the longer your shutter speed, the shallower your depth of field is (more 'blurryness' you have)