Regarding the logos, 1 and 3 have some fun identifiable elements, however the backgrounds kill the readability.
Try swapping the first one to a solid black background. Other dark tones will probably work too.
The third appears to have a bloom effect on the letters, remove that or move it down a layer and swap it to a contrasting tone, something warm tone makes sense to me, but I don't know if it would work with the rest of the image. The bloom only acts to blur the lettering, if it was from the starscape background, just remove the background.
Well done on the blending, the triangle has an appearance almost of chalk, kinda neat.