Just play a lot. Pracice all your tech skill stuff. Once you have all that mastered, then work on looking only at the opponent and see yourself in your peripheral vision. After that, work on general mindgames like jab, dash dance, grab or whatever. Then, work on character specific mindgames like ledgehop, wavedash off the ledge, double jump back on, wavedash off the edge, double jump back on, wavedash forwards and grab or whatever. After that, then just play a lot more matches. Play with people at least twice a week for a couple of months and you'll get much better.
As a second note, almost all the mini-tournament videos are uploaded. I'll post links, then I'll start working on friendlies.
Someone should host something on Sunday, and we should all go, since my flight to Arizona for college is on Monday. I'll bring my recording equipment and laptop. If there's enough people, perhaps we could have another mini-tourney?