The initial parts looked a bit stiff - like, to me, it would've been better if the closing eyes, blushing, and extended arms happened at the same time, and it looks especially stiff when Lapis does it. I also would've liked it if you'd had a few frames of them actually hugging, as it jumps from them extending their arms to suddenly being holding each other. In the frames where they're together, Lapis also looks a bit smaller in comparison to Sans than you've drawn her in the past. But you've definitely improved in terms of how you draw her from an anatomy/proportions standpoint, and the frames where she moves in to kiss Sans especially look pretty good. Glad to see you continuing to try out animatics!