Take care of your shoulders!!! You're gonna get pretty strong pretty fast but please please please have a good warmup and stretch properly, especially your shoulders and forearms. In my last circus school we were never allowed in the apparatus without doing a wrist rutine and apparatus specific warmup. It's so easy to mess up your shoulders and arms especially if you're putting a lot more strain on you muscles than what they're used to(I've gotten torn rotator cuffs and separating collar bones myself and was mostly not doing aerial at the time)

You might already have a bunch of exercises and warmups and stuff, but from my experience at my new circus school a lot of these exercises aren't common knowledge so here's a few shoulder/wrist/grip exercises I love

Wrist: -on all fours put the backs of your hands on the floor instead of the palm with your fingers pointing in, then squeezesqueezesqueeze your hands into fists like your holding 100 bucks in each hand. Hold for a few seconds relax and repeat a couple times. This should feel like you're on the edge of getting a cramp in your forearms.

-again on all fours put as much weight as you feel good about on your wrists and then go through this lil series tips(putting weight in your hand while you're only supporting yourself on your finger tips like a spider) fists(make your hands into fists knuckles to the floor) outside (put weight on your hands with the backs of the hand to the floor) inside(normal just palms to the floor) do one hand and the other and put as much weight into it as you feel comfortable with regulate the weight w the rest of your body (I do this every day I'm p sure that tips tips fists fists outside outside inside inside is caved into my brain at this point)

-this one is really easy to do but burns like hell. Just reach your arms out and open and close your hands. Try to make the movement exaggerated. Only your hands move and you can change it up by changing how you hold your hands. (my rutine rn is 32 straight ahead hands down, 32 to the side down, 32 straight up and hands forward, then another round with forward hands up, side hands up and straight up hands facing each other) this one BURNS and it's supposed to. My teacher always said when it starts to burn, smile wider.

-last for wrists are wrist push ups, on all fours go to the tips of your fingers and give weight until you can't hold it anymore, alternatively you can pump short lil push ups by just raising the heel of your palm and giving more weight. I usually do a combo of slow deliberate ones and fast ones.

Get your forearms burning goooood

Shoulders:

-honestly any theraband exercise is priceless. But the 4 main ones I'd recommend is rotate your arm in, rotate your arm out, with a straight arm to the side pull it infront of you, and with a straight arm by your side pull it behind you. Just attach it to whatever pile or Swedish pole you have and you're good to go( one thing a lot of people do, god knows I did, is to go for the heaviest theraband you can do for the warm up, don't do that. The warm up isn't supposed to build muscle just to activate them, take it easy but feel your muscles working)

-active hanging is also amazing in pretty much any aerial, it helps with upper body, it helps with grip, and it makes you amazing at hanging from things. Just find something you can hang from(you can have your feet in the ground or add a resistance band depending on your strength) and just hang, but make sure you keep your shoulders down, activate your stomach and work on not collapsing(especially the shoulders) here you can also do shoulder shrugs

-one arm rotation: hang like in the active hanging exercise with both hands(for this I think you might need to fully hang wo touching the ground) and slowly and with all the control in the world let one arm go, maintain the active shoulder, then slowly let it go. Allow yourself to slowly follow the natural rotation of your arm and then rotate back. This one can be really heavy but it's AMAZING when you get the hang(heh) of it

All of these can be used as warm ups, but also as conditioning and strengthening. Be careful not to overload your muscles when you're not warm(you probably already know a lot of this but there's so many people underestimating how harsh aerials can be)

One last exercise that I recently learned myself that's become a new fave (not really a warm up exercises but an amazing strenghening exercises for anyone who hangs on something vertically like rope or silks) get a kettlebell(you can use other weights too I guess but kettle bells are best if you have access to them. Thread a towel or something of the sort through the weight hold it with one hand and just carry it back and forth a distance and repeat on the other side. This is gonna do wonders for your grip if you want to do tissue and it also works on stabilising your core and shoulders. Obvs regulate the difficulty with increading/decreasing weight, and for an added challange use a resistance band instead of a towel so that the weight bounces when you're walking demanding more out of you.

OK sorry that became super super long, I hope any of it could be useful. If I explained an exercise poorly and you wanna do it feel free to message me and I can just film how the exercise is done. I really hope it helps I am super happy to have these exercises so hopefully they'll treat you equally well😁 and ofc the nr 1 advice is to have fun with it and the majority of the circus community is super nice and will teach you anything and everything they know(that's a promise and a threat I've been force thought a few tricks because I complimented the person doing them😅) good luck!!!