How to document a test that failed so you don’t repeat the mistake
Ricardo Lemos · 2026-10-07
Results
Reason
A test that didn’t perform as expected can be frustrating and costly. Identifying what went wrong is essential to avoid repeating the same mistake. The first thing to analyze is why the test failed. It could be poor targeting, a creative that didn’t resonate with the audience, or an offer that wasn’t appealing. Ask yourself: What was the main hypothesis you were trying to validate? What was missing for it to succeed?
Numbers
You need hard data to understand performance. For example, if you had a click-through rate (CTR) of 0.5% and the industry average is 1.5%, that’s a sign something isn’t working. Also, analyze your cost per acquisition (CPA). If you spent R$500 and generated just 10 sales, your CPA was R$50, which may not be viable depending on your average order value. Always have these numbers on hand to back up your analysis.
Creative
The creative is one of the most visible parts of a campaign and could be the reason it failed. Evaluate whether the message was clear and the visuals grabbed your audience’s attention. If you used a video, what was the completion rate? If it was a static ad, analyze engagement. A creative that doesn’t stand out can make your offer go unnoticed. Use FreeSpy to get inspired by creatives that are performing well in your niche.
Offer
An offer that doesn’t appeal to people can make a test fail. Ask yourself: Is what I’m offering actually valuable to my audience? Research your competitors and see how your offers stack up. If your promotion was a 10% discount and competitors are offering 20%, you probably won’t get the attention you need. Test different approaches, like free shipping, bonuses, or bundles.
Template
Structuring your campaigns can help with organization and execution. A well-defined template should include these sections:
- Campaign objective
- Target audience
- Creative used
- Offer presented
- Results (CTR, CPA, ROI)
Fill out this template after every test. This not only makes it easier to learn, but also creates a history you can refer back to for future campaigns.
How do you document tests that didn’t work out? Share the numbers you consider essential!