First thing to note: You didn't include a link to your deck in the post. I was able to go find the deck by following a couple of links, but making people do extra work to help you out is generally a bad idea. To help out:
http://deckstats.net/decks/12921/66622-red-green-deck/enNext thing: You need to cut some cards. Your maindeck has 67 cards in it and the general minimum for Constructed decks is 60. Going above the minimum can be reasonably done, but only for very specific purposes: stuff like
Battle of Wits. You don't have that. Make some cuts. It'd probably be fine to go down to 24 land, but I'd look for non-creature spells to axe for the rest. (Edit: I probably should say why this is important, and I forgot to do so above. Playing with the smallest deck possible for your format is almost always the right
call because you want to pull your best spells. A larger deck has a smaller chance of pulling their best spells. By definition, every card you add over 60 (for normal Constructed formats) is worse than your best 60 cards because it is preventing you from finding them.)
The rest of my answer depends on what you intend to do with the deck. As things stand, the deck is an unfocused mess of cards: that's bad. I won't criticize you for it since you are new to the game, but it still needs to be said. Looking at the deck, I don't think you have a plan for how you are going to win the game and as a result you'll probably lose often.
An example:
Charging Badger is a build-around card. It has 1 power and trample, which doesn't do anything for a 1-power creature. It can be good if you want to enchant it a bunch or put +1/+1 counters on it (and don't want to get trample from elsewhere). That still isn't a great plan since you're asking to
catch a
Doom Blade, but it's still a plan. Your deck has only two cards that are capable of pulling it off though:
Trollhide and Ivy Street Denizen. Since there are only two badgers and only two cards that can help it be relevant, that scenario will almost never happen. Without a plan to make the badgers do something, I'd take them out of the deck. (Note: I'm not counting
Giant Growth or
Phytoburst as enablers for the badger because they only happen once and still require creature combat to do anything of value.)
Where you should go from here depends on what you want to do, and I can't answer that for you. An aggro deck would depend more on creatures with low mana costs (you'd need to lose the Axebane Stags) and a bit of burn to help push you over the top. A midrange deck would start with mana-generating creatures like the elvish mystics and finish with larger creatures or spells. There are other archetypes, but that's a good enough place to start. Deciding between one of those two would help us guide you in a decent direction. Alternately, describe to us your vision of how you would like to win. Maybe you attack with seven creatures off a
Gruul Charm and sweep through their defense. Maybe you make the hugest monster ever and beat down all of their defenders until they have nothing left. Something like that.
A final note for now: I'm assuming that your deck is for casual play with friends. If you want to take it to your local gamestore and participate in tournaments or something, you have bigger problems and we need to talk about formats (Standard vs Modern for instance).