Welcome to health care magic.
W the containing fluid 8 your foot sole should have not been punctured ideally.
The fluid could have got dried up and the affected surface could have healed.
Anyway now you have already punctured the blister
so you do not have this option.
You should keep the wounded area dry all the times.
At best mop it dry with towels immediately if it happens to be wet say when you take bath.
Apply antibiotics cream twice a day and avoid putting pressure on these lesions.
If you did not have tetanus toxoid immunization
, take a booster to prevent against tetanus.
I hope the advise will be helpful.