Hi everyone. Newbie here. I just painted a wall over a wood burning stove and needed to sample a few colors to get the right color match. I just did the first coat and it looks great except when looking at it from the side, you can see where I previously painted the sample colors. Will a second coat cover it so it's no longer visible? If not, is there anything I can do to fix this? I assume I can't sand it down at this point because there's a coat of paint on top of the three sample colors. I'll never make that mistake again! Thank you for any help you can offer.