*as the smoke comes around me I laugh*
I already told you not to underestimate my eyes....
*As your wind jutsu races at me, I spew a giant dragon head at it, they then cancel each other out as I run through the collision into short range in front of you*
(Katon: Gouryuuka No Jutsu) - Fire Style: Great Dragon Fire
Rank: A
Type: Attack
Range: Short-Mid
Chakra cost: 30
Damage Points: 60
Description: After performing the needed hand seals, the user will expel dragon head fireballs at their opponent. These powerful fireballs can punch through concrete.
*Just before they collide with each other, I cause the ground beneath you to start spiraling inwards absorbing you towards the center and throwing you off balance as I run into short range through the explosion*
(Doton: Arijigoku no Jutsu) - Earth Style: Antlion Technique
Rank: B
Type: Offense
Range: Mid/Long
Chakra Cost: 20
Damage Points: 40
Description: This jutsu causes the ground and everything on and around it to be sucked in towards the middle of a large pit, much like the method an antlion uses to catch prey. Upon being dragged to the center, the victim will then be sucked underground. There the victim, depending on how deep the user makes them sink, will be trapped and/or suffocated.
*I you see me appear in front of you, I have already formed a Rasengan in my right hand which I thrust at you as you are unbalanced*
(Katon: Goen Rasengan) - Fire Style: Flame Rasengan
Rank: S
Type: Offense
Range: Short
Chakra Cost: 40
Damage Points: 80
Description: The user creates a normal Rasengan and covers it in flaming fire chakra. They then hit the opponent, causing a blazing maelstrom of fire, burning them and their surroundings.

First of all, in the very first turn, Cookie did nothing against those 3 flying kunais, so he's basically dead. Second of all, you didn't specify as how did you recognize that the wind blast is racing towards you?
Next thing is that, Omnom has expelled an A-Ranked wind, and Cookie has expelled an A-Ranked fire. You'd only need an B-Rank fire to cancel an A-Ranked wind, so Cookie's fire blast would still continue towards you, and as you did nothing about it, your dead, the nagashi won't do anything against a blast like that.
Secondly, if that fire blast was to only cancel his wind, (which was part of it, as it should of continued) There is smoke al around because of the collision, so you didn't give any reason as to how did you recognize his Nagashi. As you ran through the smoke, making you within short range, the Nagashi should have paralized you, since your in short range.
Since he used Nagashi and after immediatelly performed Senpuuken, you don't have enough time to trap him, since the dragon needs 4 handseals, and his Senpuuken doesn't need any.
Another thing with the rasengan, if you haven't learned B-rank ninjutsu, the ninjutsu rasengan, you won't be able to make a flame rasengan, and your not minato, so you won't be able to make the rasengan that fast.
If you guys would like to end this, concluding all the fails and technical issues in this fight, Omnom won.
So, in the end, let's say that all these things did not happen, Omnom can start defending against that earth dragon that's closing in upon him as Omnom is in mid-air flying onto long range.
"Jumps back into Omnom's pocket."

I shall claim vicotryyyyy
-As I see you performing Nagashi i slam my hand to the ground causing the earth to rise up into a dragon form and slam right into you. Straight after the dragon comes out of the earth and before it hits you, I cause the ground behind you to rise up behind you to stop you from being blown backwards. I then do a rasengan charge at you (Like they do in the anime) and thrust a flamed rasengan into your midriff-
(Doton: Dosenkiryu) – Earth Release: Earth and Stone Dragon Technique
Rank: S
Type: Offensive
Range: Short – Long
Chakra cost: 40
Damage points: 80
Description: The user after performing the required hand seals Horse ? Dog ? Bird ? Ox ? Snake will create a large dragon of earth erupt from the ground and direct it towards the enemy with devastating force. This technique much resembles the Water Release: Water Dragon technique.
(Doton: Doryu Joheki) - Earth Style: Earth Flow Rampart
Rank: B
Type: Defence/Supplementary
Range: Short/Mid
Chakra Cost: 20
Damage Points: N/A
Description: This technique raises a large ridge or hill (plateau) from the ground. The user can combine this jutsu with Water Style: Waterfall Basin Technique to create a waterfall.
(Katon: Goen Rasengan) - Fire Style: Flame Rasengan
Rank: S
Type: Offense
Range: Short
Chakra Cost: 40
Damage Points: 80
Description: The user creates a normal Rasengan and covers it in flaming fire chakra. They then hit the opponent, causing a blazing maelstrom of fire, burning them and their surroundings.