I'm not usually an inept person, but for some reason I have trouble with this.

Everybody else posts beautiful photos of their newly planted tanks, and it seems like the plants all just cooperated and went in together nicely. But when I finally get one plant to stay down in the substrate, and then I try to plant another one next to it, the first one comes loose and floats up. I finally had to just give up and space all my plants farther apart than I would have liked. Is there a tutorial somewhere that I can learn how to physically get my plants arranged? I don't dare move a thing because I'm afraid I will dislodge the whole bunch and end up with a floating mess!

Surely there must be some trick that I have just missed. I'm really good at planting outdoor plants, but those don't float up in the air while your working on them!