Possible TCG League

[megaMasquerain]

That one deck on there is my favorite Green deck that I have, I wish there was a program where you could imput your cards then battle people online.

Lackey is basically that, and there are other options specifically for Magic that are more active and well-known. (Cockatrice, Magic Workstation) Lackey is my preferred program though.

Your green deck reminds me of what I did when I first started out! If I may suggest some budget beginner solutions:

Wurm's Tooth doesn't do much. Unless you're playing around it (which is rare) life gain isn't a really powerful effect.
Add more Arachnus Webs, if you have them. Their use is limited but if you're restricting yourself to mono-green, they're one of the only pieces of removal you have access to. If you like the webs, try getting an Arachnus Spinner and more spiders so your webs keep coming back.
Try consolidating your cards. Take Llanowar Elves and Overgrown Battlement, for example - they both make green mana, but the Battlement would probably suit your purposes better (unless you decide to focus more on elves, seeing that you have a Joraga Treespeaker in there). Another group of creatures with similar effects - Garruk's Horde and Pelakka Wurm. I would recommend cutting the Wurms and adding in the one Horde in their place.
It's better to have 4 of one sort of card than 1 of 4 sorts of cards. Makes it easier to get that one card you need.
Finally, Melira could probably be sideboarded. If you're not playing against an Infect deck she doesn't do much for you. Add the Birds of Paradise instead - they're great.

If you'd like, I could help you set up Lackey and we could play a few games.