First off, don't play on an HDTV. It lags and screws up your timing. Play on a normal tv.
- Learn to jump cancel your grabs
- Change your playing style and move set:
A. Use the fsmash sparingly for when you know you can hit your opponent with it. Make strong use of it when edge guarding falco.
B. Use the dash attack sparingly. In this match-up, you want to dash attack to hit the falco when it lands from a SHL. This falco doesn't even do that, however...
C. Use marth's fair attack as your primary attack. Make the nair your secondary form of attacking.
D. Use grabbing as a means to apply pressure on falco. Use grab to uthrow, and learn to chaingrab falco. Around 23% marth can pivot grab, then for now end with an fsmash or a fair to knock falco off the stage. Then edgeguard.
E. Learn to use more utilt. Try to get falco on a platform, then just utilt it then continue into uairs if possible.
- Learn to sweet spot the edge as marth up-b's.
- Learn to jump onto the edge to edge hog. Then learn to use marth's bair attack to turn him around then grab the ledge to edge hog. Then learn to wavedash onto the edge to edge hog. Then learn to wavedash then fastfall to grab the ledge and edge hog (more advanced).
- Use the C-stick for all your aerial attacks
- Practice L-cancelling until you can do any of marth's aerial attacks in any sort of scenario without missing the L-cancel.
- Use dair sparingly when edgehogging falco. If the falco firefoxs into marth, then counter and continue to edge guard with dtilt or fsmash or neutral B.
- Learn to wavedash and waveland. Then learn to wavedash out of shield. As a general rule, do not wavedash toward your opponent unless it is followed by an fsmash. Use the wavedash as a means to space yourself from your opponent so that marth can land the tippered fair, or to fake out your opponent, etc.
- Do not roll toward or through your opponent. If you roll, roll away. Sometimes rolling away is best, sometimes wavedashing away (or out of shield) is best.
- If falco tries to phantasm into marth, just charge a neutral B and let-er-rip. If you can't get the neutral B out, learn to jab when falco does that.
- A tippered up tilt KOs most opponents on most stages in the low to mid 100's.
- Really focus on teching (pressing L right before hitting the ground after you're hit in order to immediately stand up, or roll to one side and stand up). It's an important aspect at low and high levels of Smash. Try to never miss a tech.
- Use X/Y to jump rather than the control stick. Learn to short hop really well with marth. The reason is marth is weak from below. In this match-up however, it's good for marth to use lots of full hops to get around falco's lasers (not an issue against this falco, though).
- Learn the different methods of getting onto the stage from the edge:
A. Press up or to the side to stand up next to the edge.
B. Press R/L to roll onto the stage.
C. Press X/Y to jump onto the stage.
D. Press down on the control stick followed by X/Y to jump onto the stage.
E. Press down on the control stick followed by X/Y then an air dodge to get onto the stage.
F. Press down on the control stick followed by X/Y then a wavedash onto the stage. This wavedash can be followed by:
1. A roll toward the middle of the stage
2. An in place dodge (R + down on control stick, or to buffer it and do it immediately R + hold down on the C-stick).
3. A grab
4. A dash
- Watch old videos of Ken and Azen playing. That's what you want to look like eventually. Try to do what they do. Not everything pros do takes tons of skill, it's more about the best and most reliable move for the occasion.
- Attend a tournament and compete.
Anyhow, that should be enough to keep you busy for at least 6 months. Good luck.