I would love to share some tips.
In Judo there are three parts to a throw (takedown in bjj/wrestling).
First break your opponents balance. Usually done with your grip.
Second step in.
All this sounds easy, but you have to make it work simultaneously for it to work well.
Here are some Judo throws that I think work well for BJJ. They are low risk, meaning that they won't put you in to bad of a spot if you miss. (some throws can leave you open to chokes).
I will say the English way and then the Japanese. The throws I like are mainly foot sweeps for BJJ. They are major outer reap, major inner reap. minor outer reap, and minor inner reap. I also like major hip toss, body drop, inner thigh throw, sweeping hip throw. The corresponding Japanese names are o soto gar, o uchi gari, ko soto gari, ko uchi gari, o goshi, tai otoshi, uchi mata, hari goshi. O means major in Japanese. Ko means minor. Uchi mata is won of the prettiest, best, and hardest (to an opponent) throws that there is.
A lot of BJJ guys do that stiff arm, where they grab sleaves with the right hand and then grab the lapel with the left hand or vice versa. Then they hold you so it is hard to shoot in. I like to fake with my right foot to their left foot, like I am going to sweep, get them to move back and then attack their lead foot, or vice versa. This helps you shift their balance. Chaining o soto to o uchi (major outer to major inner) can really get them.
Here are some videos:
Dan hopefully some of this makes sense. If it doesn't pm me and I will give you my phone number. I think I make better sense in person/phone.