This is going to be my honest opinion.
You're trying too hard to be 'artsy' and get different shots. The main focus of the day are the bride and groom, not the hanging flowers, not the ferns, etc. Yeah it's nice to get detail shots of other things but it looks like that distracted you. There are times when you shoot stuff like that, and it's when the bride and groom aren't around. Or if you want to include those types of shots for the client, get a second shooter and let them do that kind of work. That's kind of what they are there for.
On the same idea, you need to focus better. I understand it's 'artsy' and whatever to use shallow DOF or not focus on anything in particular (ex: Tara Whitney) but it has to be done PERFECTLY and with 110% purpose, otherwise it looks like shit. There are a few pictures of the bride holding the bouquet, which is a traditional shot you should be getting, BUT nothing is in focus. Literally nothing. Like I said, use it with purpose otherwise it just looks like a fuck up. I feel like people think in portrait photography that everything has to be shot at 2.8. It's NOT TRUE! Haha. Please get out of that mindset.
Next you need to work on lighting. Bottom line is that they are all way too underexposed. Some by a few stops. Crank that ISO if you don't want to use an external flash. You should be using a flash in a lot of these, and you can bounce it so it looks natural. If you really really don't want to use flash, which is understandable, you should save some money to pick up a 5dmkII and 50 1.2. Then you can call yourself Jessica Claire and make bank! Just kidding, love you Jessica.
Biggest thing with lighting is lighting the bride and groom. THIS picture for instance,
I understand what you were going for being all far away and getting the surroundings, but you gotta light it properly. Also, the horizon is crooked but whatever that's another issue. If you were going for the silhouette look, okay you almost got it. But this is the ONLY picture you posted where the bride and groom are together and you can't see their faces. You need to have shots where you can see their faces, bottom line. In a situation like this you have some amazing lighting that can produce awesome results with minimal effort! Looks like late afternoon, you're getting some golden light, aww yeah, jizz in my pants. You need to back light them, and literally all you do is put their back to the sun and overexpose by say.. 2 stops, and you've got yourself some magic right there. Literally all you do is overexpose until you blow out the background but you have the perfect exposure for their faces. This is where 2.8 comes in handy!
Lastly, be aware of your surroundings. The brides pictures by herself look like she's in a high school parking lot. You have to go scouting locations before the actual wedding to get a feel for where you are going to shoot formals. Use WALLS! Unless you live in like socal and have the best outdoorsey looking locations, you should really utilize walls to your advantage. You can make the shittiest brick wall an amazing backdrop. And then that juxtaposition between the formal bride and the shitty wall, omg, art! People love that shit.
So yeah, check out a bunch of wedding photographers if you want to continue shooting weddings. Like follow their shit everyday. Take their lighting ideas, take their posing ideas. Literally steal certain poses and use it when you go out and shoot. Here are some for reference..
www.jessicaclaire.net
www.jasminestarblog.com
www.danodayphotoblog.com
jonathancanlasphotography.com/wedding.html
Use your friends for portrait practice. Wedding photography is some of the hardest photography out there, you only have one shot to make the shot so it better be perfect. There are no second go's. It's documentary, portraiture, fine art, editorial, all in one. Practice, location scout, and research as much as you can.
Disclaimer: You shoot awesome action photography and this is a totally different style so it's definitely going to be hard for you in the beginning. I didn't type this all out to be an asshole and tear you to shreds. If i posted my action 'photography' if I could even call it that, you could tear me a new asshole. Haha.