...i must say it was impressive
BUT ...youre asking for help and yea i think you need it too...
first of all i like your mario but theres lots and lots to improve
1.WD - You should try to
WD more to outsmart your opponent mix it alittle with Dash Dance yeah...
also you should
SHFFL airials WAY more often ..
.like Uairs and Nairs
2. Approaches - you should work on your approaches too - Try this as an alternative : WD Back (if you have to) + Dash Forward to opponent + sh nair fast fall + Jump Canceled grab and then combo your opponent with some Chaingrabs or whatever you CAN do against the char you play against...
3. Projectiles - I didnt see many
fireballs in the first match...but then again...most of the times you were so close to the falco... but you shouldnt spam them they come in handy though
4. Also use DSmash and FSmash a little more often...
I just watched the first vid so i cant give you much advice but just try to use the techniques..and im lookin forward to your improved Mario^^
because it really is impressive... also watch some other Mario players such as Eggz,Monk myself maybe too to copy and learn some of the techniques YOU find useful
Thats all i have to say! Have fun and good luck =D
and try to stay alittle more on the ground so you can set up your Appraoches such as Nairs and whatever^^