It’s important to know where the miracle power comes from. Apparently, not all miraculous power necessarily comes from God. That could be a problem. The last thing anyone wants to do is invoke some kind of healing through a portrait or a statue.
All anyone needs to do is simply ask God, in Jesus’ name for it. Done. If He wants to heal you then you get it. If He doesn’t want to heal you then you don’t get it. The prayer of the righteous person avails much. Just something to keep in mind.
Another thing, don’t be afraid to just be honest with God. People aren’t perfect and sometimes their motive isn’t pure. If you secretly know you’re praying for something with ulterior motives, but you’re trying to elevate it to God thinly disguised as selflessness, righteousness, and goodness then He knows that too.
It’s better to pray something like “God, I’m sorry for being greedy, but I’m asking You for more money because I just need more to make my life easier. I know that’s not a good prayer, but just being honest with You. May Your will be done.”
Remember, just be honest. Don’t be self-righteous.