Colour palette on the second one is nice. Probably the best of the bunch.
The first piece is a cool concept, however there's a lot of dead space between the lettering. Can you see how much better it looks between '- Think type is something that should be-'. It's condensed, and it looks good.
The rest of it seems a little misplaced, like it was just thrown on there, ja feel?
Just play around with things to fill the gaps, resize, try out some different fonts and the letter spacing function.
The last one is pretty dark, and lacks depth. By that I mean, it's very static, there's not a lot of background to foreground differentiation.
The main stock of the guy looks like he's just been cut and paste into the foreground. There's no interaction with the background.
Try adding variant blurs to the objects in the background to give it depth.
Also try interacting the shapes with him. Here's and example which I made like 3 years ago :>
See how the shapes sorta wrap around the person, and are blurred in places?
Anyways, I've ranted way too much. Sorry
Keep up the work mate