Many miracles are mentioned as being done by God through Saint Paraskeve. According with the miracles [http://www.sfantaparascheva.com/minuni.php described here], Saint Paraskeve helped people with:
:marriage , finding a great spouse:health related issues:finding stolen objects:escaping from the power of sick angels:exams and studying:finding a job:finding a place to live:finding resources and ways for coming to pilgrimage to her relics :defending the Iasi city on war:stopping the theft:building a Church:defending the church:defending life even of the unborn:defending food from bugs
Miracles described took place because people did one or more of the following:
:prayed to the Saint in front of her relics asking for help:read the Akhatist of the saint in front of her relics:reading the Akhatist and the Paraclete in front of the Holy relics:left a diptych to be comemorated at Holy Liturgy:gave a diptych to the Church that has the Holy relics through another person visiting the Church:prayed to the saint at home
praying to God or in front of the relics of a Saint it is good to pray for both problems you know about and problems you don't know about. Regarding the problems you don't know about, you can pray for whatever Mother of God knows that you need.
A diptych is a list on which names of persons alive or departed are recorded to be read for help at Holy Liturgy in front of God. The names of living and departed are written usually in two different columns. On the diptych, in the end can be mentioned "with all their relatives" as to give help to as many people as possible. Also it is customary to write people you don't know as a way of mercy.
After doing some prayer or actions is good to pray for these to be useful.
*[http://ocafs.oca.org/FeastSaintsViewer.asp?SID=4&ID=1&FSID=102968 Venerable Parasceva (Petka)] ([[OCA]])