once coming up with vs once I came up with

Some examples from the web:

• In summary, there\'s a lot of to contemplate once coming up with a web site. coming up with a web site may be created fairly easy by operating with a corporation that makes a speciality of serving to tiny businesses produce their web site or get ...
• Jul 22, 2013 ... ... idea muscle is weak it will hurt you in other parts of your business as well, so use this opportunity to get it back into shape. More on this here. Once coming up with the list is easy for you, you can move on to the next step.
• Mar 3, 2015 ... They've taken a few days to respond at once, coming up with many different answers. There doesn't seem to be any urgency for their economic security, and the way in which they speak is much like a robber who demands ...
• Oct 25, 2015 ... Once coming up with the idea of “The Punisher,” Frank promised to always fight against crime and injustice. What set him apart from other heroes and even villains was not just his penchant for murder, but how personal he ...

Some examples from the web:

• Once I came up with a way to make the plot work, I started thinking about the characters. Which would be the bad guy--the current duke or the long-lost duke? Then I thought--wouldn't it be so much more interesting if they were both good guys ...
• Aug 18, 2014 ... Once I came up with the idea behind today's comic, I couldn't stop making 'em! Hope you like this three-in-one bundle of StarFox silliness. Now then, onto the thing I hinted at… logo. It's Nefarious, a new game in the works on ...
• Once I came up with 5 theme ... more. Andrew Reynolds notes: Like any global climate change negotiations, this puzzle took shape with a lot of give and take. Once I came up with 5 theme answers I thought I was headed for a 76 or 78-word  ...
• Feb 29, 2016 ... Once I came up with a solid idea for Normale, I practiced my elevator pitch to myself at home over and over until it started sounding natural and – more importantly – confident. I knew what I was talking about but I needed to ...