Agree with n2n44 on the typo, in specific font combination and readability. I also think the overall composition is lacking a good focal point. Almost every element demands attention wooden background, ribbon, that white thing (don’t know how it’s called) and text.
For the latest one, again the typo. I think the flat elements and textured background needs more blending. And the names on the pink heart is to me hardly readable.
I am also getting married in September, currently working on my own invitation. But have to say, this is a good start only needs more refinement.
Hope this helps.