Hi again. I'm thinking they look ok. I always plant lettuce thick. The only problem I see is that you are entering a very narrow window to grow lettuce. I planted mine on March 5, and that's late for me. Lettuce is a cool weather crop, and temps above 80 degrees causes it to bolt, flowering and setting seed, which makes it bitter and inedible. You will want to grow it in at least half shade during the day. This will help it. I'm trying to finish up harvesting my lettuce and spinach now the weather has turned very warm. Pics below of lettuce and spinach about three weeks after planting. The good thing it that it can be harvested when the leaves are very small. Just cut off the individual leaves.