This is how I press my kif, easy, very easy.

I take the kif and I press it tightly into the corner of a plastic baggy. I fold it up, tightly, into a small, squarish shaped pack, I then take tape to close it shut. I then take a sledgehammer, a small one, not aibg one of course, and I start tapping the bag down, turn it over, tap some more with pressure increasing with each blow. After about 2min of hammering the small bag, I then unwrap it and there I have a nice, compressed, blonde colored piece of hash.

I do it all the time and it works great. Give it a shot.