Which was the biggest one that you have committed?
Probably most part of people will answer something as a huge and extreme change, or even a real madness - indeed. Me, on the other hand, I prefer the little simple things to prove that I've a crush on him.
I sincerely believe that it is possible demonstrate all love I feel through routine acts. As time goes by, inclusively, those are exactly the details which couples used to forget... putting them aside as long as they get along.
Making your partner a sandwich, for example, with all ingredients he likes (and had gone so far so as to buy them!), doing that with all your heart... I'm pretty sure as much as he is going to be pleased, he'll fall in love! - day by day, more and more.
However, if he doesn't, you can try to please him with other "easy" kindness. He is supposed to be charmed by every single thing you do... (at least in the first three months of relationship) and return you both this care and affection.
On the contrary, for sure you can make different things, in order to amaze him... take a extreme resolution maybe, but I don't think it's necessary a so heavy work when love is reciprocal, when both are involved. When we give someone more than other deserve, it's not fair with ourselves.
Simple as that. It's the law of attraction: it's giving that we receive - and it MUST works. After all, life should be a two-way street. If not, it doesn't worth...