If you aren’t sure your test is positive or negative turn it upside down ( turn it so that the control line is on the left side and the test line is on the right) this helps me see a color difference. A pic of what I mean is gonna be posted below...

Pic of how I first look at it.... 👆🏻👆🏻👆🏻

Pic of it turned around so that I can see the color difference and see that my test is negative. 👆🏻👆🏻👆🏻

I really hope this helps others because it’s truly helped me.