Alfa I like this, maybe center the background and reduce the inner shadow a little!

Bravo This specific one is for an iPhone wallpaper. Seeking on the logo itself. Stands for Dedication Education Knowledge Love Trust

Charlie The t is too far away from the rest. Remove the innershadow and the backround image, images influence the viewer approx 80%. The sharp 'triangle cutouts' are positioned too close to the edge. Especially on the k.

Delta Agreed with Charlie. When you take away the background image and the inner shadows, it's a bland logotype. And the triangle cuts don't help to make it more unique. Try to brainstorm ideas or concepts that would better communicate what this company/group portrays or believes in.