Sometimes applying a style to a layer is not enough. If you want to reapply the same style again you can rasterize the layer style but you will loose the blend modes. A way around this issue is to turn the styles into layers and that way you will preserve the blend modes, clear the layer style list and you will be able to reapply the styles with different settings. Take a look at the demonstration.
I've been creating Photoshop tutorials since 2009 for beginners and advanced users. I'm a self-taught Photoshop artist and like teaching other how to improve their skills. I love design and graphic communication.