Alpha-testers needed! news - Minecraft Platformer

Alpha Testers for my Texture-pack.
Hi,
I'm Dementium4ever. Maybe a few of you guys know me.
Over the last 6 months, I made this HD-texture pack for Minecraft. Well, it took so long because I made
a loooong break of 4 months between it. But now, it's finally about to release.

What I need now, are some testers. Why? Well, my PC is too slow to show 256x256 packs. I have a unplayable framerate of ~1-2 FPS. So I need some people with strong PC's who test it for me.
The texture pack doesn't make any changes to the GUI, or to the weapons. For everything else, yes.
I hope I find some nice testers. Anyone who's interested in this, please write it in the comments.
I'll send you the download link.

But I need some testers who really give me usable feedback. Not something like: "Totally Ugly!!" Or, "This pack is sh*t". I hope you can give me feedback to this questions: " What's missing?" "What doesn't work?"
"What's ugly?" "What could I improve?".

Thanks in advance:

Dementium4ever