My advice would be
- allow time for ranking
Pinterest is a long game so you need to work out what you've got time for each week and stick to it. Don't get all excited and pin 20 pins and then nothing for a month.
It takes time to show up in people's feed so work 3 months ahead if your content is seasonal. Post for Christmas in October etc
Make sure you use keywords. That's the words people use when searching. You can find them by searching the topic yourself and looking at the list that comes up. Take a look at Haxnicks to see this in action
I learnt all this from Meaghan at Pin Potential -check her out tooHelp with Notifications