Been running only video creatives for my clients - which has been working in terms of Link CTR, so the ads + copy seem to be doing well, and the videos are pretty much iterations of the ad copy anyway.
But I'm wondering should I be testing image creatives too? I'm sure the answer is yes, but so far my clients are spending £20/day, so I'm wondering is that enough to be testing different creatives? Or will it just be diluting an already small budget too much?