Not bad. Here's a few things i think you should work on.
Don't spam Kirbys Bair! Bair is extremely important, but you shouldn't just hop around and use Bair for every attack. Mix it up a little. Also, use Uair after you Fthrow them, not Fair, that way you can Gonzo them at low percentages.
I also think your dodging could use some work. What i like to do is dodge their attack, and then counter with a Utilt or Nair. Speaking of Nairs, you could make more of an effort to use it. Alot of kirby players dont really use it much, but it has been
really usefull to me. I've based my moveset on my Nair.
Nair has virtually no lag, its quick, and most of the time it cant be dodged because the last frames of the attack will hit them after the dodge frames are over. You can also follow up a Nair quickly, because it has virtually no landing frames, and your opponent will still be right next to you even after the attack hits. I like to follow up my Nair with a Dtilt, if it trips them, follow up again with a Fsmash. If it doesn't, follow it up with a grab, jab, or another Dtilt if their percentage is low. Nair is also useful for people who like to dodgeroll. You start the Nair by moving forward, but quickly move back to hit them while they're dodgerolling to your opposite side. You then follow up with a Utilt, usually another Utilt, and then a Bair. Another followup for a Nair is to grab them. I usually Dthrow after this, then follow up with a Utilt, and try my reverse hammer on them.
This brings me to my most discussed topic. Mindgames. Ive said this countless times, but ill say it again. Stone is really usefull for edgeguarding your opponent. They usually think your going to spike or Bair them, so using stone will really get into their head. Most people will try to air dodge it the first time, if they do, then quickly transform back and follow up with a spike. If they don't air dodge it, and if you timed it just right, it will usually hit them, and send them flying to their doom. (This is of course if you did it while their percentage was high. I recommend not to use it unless they have a high %, because if they don't die, you'll be in a perfect position for them to spike you.) Be sure to transform back before you fall to your own doom, and don't panic when your down there, that's where Kirby's handy recovery comes in. In a serious match, i sometimes find myself either not transforming back on time, or panicking and using my ^B too soon. Make sure it doesn't happen to you.
Another great mindgame i like to use is to Dthrow, into a dashed reverse hammer. Your opponent will try to hit you from below, but miss because you dashed out of the way. You then use those landing frames to own them with you hammer. This technique can also be a combo finisher. Grab, jab, jab, Fthrow, Utilt, grab, jab, jab, Dthrow, Utilt, and then a dashed reversed hammer. Pretty hard to execute, but if you manage it, it will take a butt-load of %, plus you get that famous "I'm so awesome" feeling.
Here's another fact. If your opponent is serious,
do not taunt! They wont care and usually punish you for it. If you do have to taunt, use his down taunt, its quick and can really get on their nerves
.
Back to mindgames. Inhale is a great mindgame. They will usually run straight into it, when they do you can either swallow them, or spit them out. I like to spit them out, because then i can inhale them in all over again ^^. You can also grab out of the inhale. When they're in your mouth, walk forward and let them escape. They will end up right in front of you, and you can grab them from there. If your opponent is quick, i don't think it will work too often. In that case then I'd spit them out after inhaling them.
The aerial hammer is also a god for mindgames. You can start it off by moving forward, and then move backward for the second swing. Your opponent will think your going forward with the attack, so they'll dodgeroll or dash to your other side, only to be hit with the second swing.
You can also grab them, and pummel them to death. Keep pummeling them until they break free. Then follow up with a Fsmash. Usually works once or twice in a match, after that it gets predictable, so don't use it too often.
Overall you have a decent Kirby. Just work on your Nairs (Well you don't really have to, but i recommend it.), more Fairs, Utilts, and work on your Gonzo combo. Also, try to implement mindgames into your moveset. It's really helps.