Pinterest / Move your boards around to reflect the seasons i.e. put your Christmas gift ideas at the top of your boards when you're approaching Christmas, rather than in the middle of summer and move it towards the bottom when Christmas it over. To move your boards, check out how here.
Twitter / Search for a hashtag to go with your tweet by looking for the appropriate one in the search box and don't put too many hashtags in, it's off putting!
Instagram / Before playing around with your filters, try adjusting the brightness first. Sometimes that's all it needs!