Good fight mate.
close fight and a good overall effort.
I'm not an MMA fighter so I will only comment on what I know best, ie Muay Thai.
Work a little more in clinch work at a straight Muay Thai only gym. I find MMA gyms dilute the thai style a little too much. If you have good thai stand up grappling you would have been able to launch him in those clinches he had you in no probs. I know in a fight it's different and especially in an MMA fight but if you know something you can always use it to your advantage.
What comes to mind is silva vs franklin 2 times! You would have thought franklin would learn after the first fight to stand up grapple but he didn't and paid for it twice and silva isn't really considered much of a stand up thai stylist in thai circles but he does know it much better than most mma fighters. That makes him that much more confident and stronger.
Malipet has some good videos about grappling and throwing but the best thing is to physically do round after round with a guy hanging on your neck and likewise you working out how to use it to your advantage. He had your neck a few times but didn't do anything with it.
As someone mentioned, follow up all your combos, ie if it's a punch combo, finish it off with a kick. If it is a kick combo finish it up with a punch.
you can get good at this and become more fluid by drilling this with thai stylists over and over until it becomes habitual.
Go both sides, up and down, ie cross hook and then right kick to the leg or body etc... Duane Ludwig did this well against one of his opponents in king of the cage.
Shadow boxing over and over again is also good for learning to be fluid and adding punches and kicks on the end of your attacks/combos.
also, in the clinch, aim to bring your hips into and closer to him if he has head control and that way you eliminate his knees, rather than trying to block them with your guard or arms....think hip to hip and then your arms will be underlocked around his body ready for a slam/takedown.
Stand up thai clinching is the most undertrained area for mmaers in my opinion but once learnt the effects are devastating and really annoy a lot of mma guys.
olympic/greco roman wrestlers though will throw your hands off immediately the minute you touch their heads and then go for gold on you so you have to be wary of a good wrestler gaining hip control if your not careful.
ok... so I didn't tell the truth, I've done some work with MMA guys but it's not my area.
Anyways, best of luck and keep at it, you show solid defence and good forward 'fighter' attitude.