I know (have read, and watched videos about) the average CTR being between 2-10%. I am just wondering what target you guys aim for, obviously, you don't want to be at the 2%, but what number indicates to YOU that you need to change your thumbnail? I have a few videos (very few) that have a really high CTR- but that is due to only a few impressions... the majority of mine are around the 3% mark, so I need to improve.