Posting this because I'm kind of tired of the PMs I get saying "How do I get better!?" "Why can't I beat you?" "I can't seem to get better with my character, HELP ME!!!!!111one". Not just on this site either, but quite a few -.-
This is a presentation by Gimpyfish62 (AKA, the guy who plays Bowser competitively) about accepting your characters limitations.
Every character in the game has flaws. Accepting them, and using them can make you a better player. This applies in both Melee and Brawl.
This second presentation (Also by Gimpyfish62) is about having the proper mind set.
In addition to this, I say NEVER GIVE UP. Its depressing to me when I start beating someone, then they just start slipping up more and more or even just KO themselves purposely or just End Contest. I have won matches where my opponent had 4 stock and I was on my last one by refusing to give up. Every single match you play can be won, but only if you do NOT give up.
My Creations in Modnation Racers! Check zhem!
http://community.modnation.com/en-us/players/IvoYaridovich/creations
