The textures and font place is a useful technique but its not all that matters in photo shop
Try messing around with layer styles more to see what each one does if you will
It's really important to learn how to use different brushes and the rubber successfully and to your advantage for shading, fading and mouse control for detailed jobs
Sometimes with textures it helps to download other peoples GFX packs as these can help you to find good textures and image stocks also they normally contain lots of good fonts!
If you can get hold of illustrator aswell that helps to refine your pen tool skills and overall patience

The texture and speckles work well together on the top image as does the text with the flare style underline, However the flare has a weird fluctuation in the middle which kinda looks odd and like it was stretched out too much.

Despite the S coming from a tutorial the font used underneath the S is nicely placed and the thin font contrasts the bulky image really well.

Personally I'm not a fan of the rest of the images..
I was a beginner and after that tutorial I tried to incorporate that effect everywhere but in some places it just doesnt work :/