ryamcs31 wrote:
make a studio and send invites to everyone you see on scratch

While it's a good idea, I believe about half of the people you invite will not accept the invite. Adding everyone you met would also be time consuming and you may also not get any sort of “reward” or goal set from doing this as about half of the Scratchers in the community hate studio activity which is why most Scratchers join studios with little studio activity.