This is my original design, which I came up with many years ago.  It's just basic tatting with one shuttle and a ball of thread.  Enjoy!For pdf of this pattern, click here.
  
Doily measures about 6 inches in diameter when made in size 30 crochet cotton.  Ball and shuttle are used throughout.
  
Center:  R 12--12.  R 2-2-2-2.  RW.  Ch 6-6, j to 2nd p of small r.  RW.  R 2-2-2-2.  RW.  Ch 6-6, j to 2nd p of small r just made.  RW.  R 12+12 (to long p of 1st r).  Repeat until there are 6 large r in all, each sep by 2 small rings and chains.
   
  
Rnd 1:  R 4+4 (to p on ch of center).  RW  Ch 3-3-3-3-3-3.  RW.  Repeat all around the center.
   
  
Rnd 2:  R 12+12 (to middle p of ch on previous rnd). [R 2-2-2-2.  RW.  Ch 6-6, j to 2nd p of small r just made.  RW.]  Rep [ to ] for a total of 4 small rings and chains, then R 12+12 again.  Rep the sequence all around rnd 1.
   
  
Rnd 3:  This rnd is all chains.  J to p of 2nd ch of previous rnd, ch 10, j to p of 3rd ch of previous rnd.  Ch 13 p 2 ds bet, then repeat the sequence all around, always skipping the 4th and 1st ch of the previous rnd.
   
  
Rnd 4:  This rnd is all chains.  J to 1st p of large ch of previous rnd, ch 3-3, skip 1 p and j to next p.  Repeat for a total of 6 ch, this forms one "arch".  Then ch 5, and repeat this sequence all around.
     
  
Final rnd:  R4+4 (to last p of an arch of previous rnd).  R 4+4 (to 1st 
  p of next arch of previous rnd).  RW.  Ch 3-3-3.  RW.  R4+4 (to next p on arch of previous rnd).  Continue all around, making ch between all r except those at the beginning and end of each arch.
     "Arches" doily © Marilee Rockley 2009
    
Abbreviations: 
R  ring
Ch  chain
rnd  round
-  picot
--  large picot
+  join
j  join
p  picot
RW  reverse work
sep  separated
bet  between
ds  double stitch