First of all Jethro, that's a great start with what you have. Focus looks good and stars are nice and tight. You can probably push your exposure out to 3 to 5 seconds and still maintain fairly round stars without tracking. Using the 500 rule, you can calculate an appropriate time by dividing your lens focal length into 500. In your case, that's 5 seconds but that is just a guide and probably the maximum exposure you could try. More subs will also help. If you shot 47 x 2 second exposures, that's just over one and a half minutes - not very long, not long enough for some of the other nebulosity you're missing with short exposures.
Watch your shadow density in your processing too, as there will be more to reveal in what you have if you don't try and make the background too black. It's all a learning curve. What ISO were you using? You could probably get a really nice result by shooting say, 100 subs at 3200iso at f 2.8 and 4 seconds. Also, where you are shooting from makes a huge difference. Get yourself out to a nice dark sky so you're not capturing any artificial light in the sky.
Keep experimenting, you're doing well and results will get better as you learn. It's a great hobby and as you've found out, you don't necessarily need a telescope!
