Me [24 M] need some advice on how I can show girlfriend [25 F] how much I truly love her

This is a fairly new relationship coming in at 9 months and we had a bit of an argument last night and as I've been self reflecting on it I feel like I could be doing more in the relationship.

My question is how can I show her that I love her as much as I do without coming off as forced or cheesy? The typical flowers and gifts thing is cool but I want it to be a lot more personal and make her feel like the special woman she is.

tl;dr: How can I show my girlfriend I love her to death without coming off as cheesy or forced?