Your seedling were in pretty good shape even at the start the key is you adjusted early before damage. Thise leaves will be removed later anyhow.
Your past research and interest imo will have you make this look easy. Keep it simple on the first and make small adjustments each grow and you will have great success.
But there isba down side to that... you likely will not have many first hand issues to correct. How's that bad? We learn from our mistakes
. Second best is to learn from others mistakes.... butbuts just not the same lol.