I need help to make a dripstone like block

No tutorials to my knowledge, however, I can sorta explain how, I need to first know your level of understanding in procedures, block triggers, and additional placement conditions so I know how in depth I need to go.

My apologies, I have been quite busy. 

1. You need 3-4 blocks for this
   1. Base Block - This is the widest point of your dripstone like block
   2. Center Block - This block is a center point between your base block and your tip block
      1. Center block should match the top of your base block to the bottom of your tip block
   3. Tip Block - This is the tip of your dripstone spike/stalag- 
   4. Conjoining Block - This block is similar to your tip block however, is mirrored north-south/up-down to join down facing dripstone to upward facing dripstone
2. Once you have built these blocks, you will then need tick-update procedures
   1. Tip Block On Tick Update
      1. If block above is tip_block OR block above tip_block is conjoining block replace block at xyz with center_block
      2. if block y-1 tip_block and is block y-1 facing down OR block at y-1 is conjoining block and is block at y-1 facing down replace block at xyz with center block facing down
   2. Tip Block When Placed in World Trigger
      1. If block at y+1 is tip block AND block at y+1 is facing down AND is block at y-1 tip block AND block at y-1 facing up replace block at xyz with conjoining block
   3. Center Block on Tick Update
      1. If block y+1 is center block and is y+1 facing up do replace block xyz with base_block
      2. if block y-1 is center block and is y-1 facing down do replace block xyz with base_block facing down
3. After this you would have to create a feature for dripstone. It is painful to do but you'll figure it out.
4. You may have to inker your procedures to  perfection, this is all a theorized/hypothesized guess on how this would work, I have not personally tried this but I am HOPING that this will at least give you an idea of what you need to do.