Again he said, “What shall we say the kingdom of God is like, or what parable shall we use to describe it? It is like a mustard seed, which is the smallest of all seeds on earth. Yet when planted, it grows and becomes the largest of all garden plants, with such big branches that the birds can perch in its shade.” (Mark 4:30-32, NIV)
God isn’t bothered by small beginnings. He has started something great on this earth that will increase. Keep being salt and light. The “size” isn’t up to you.