Front squats are being led from the knees it would seem, rather than the glutes.
Also, watch your bum tuck right at the bottom - a fun way of doing this is to REALLY force your knees apart and get the ankles involved.
Top, however, looks great!
Cheers, noted i think a massive sticking point for me at the moment is my ankles, so hopefully as these loosen up as well the form should improve.
I have no plans to up the weight any time soon as i am using these to help improve core strength and flexibility.