No....they're awful!
Looks like you're travelling too fast and not looking where you're going as the bead width varies drastically and you're weaving about all over the place.
Some look a little cold too but that may have been where you were experimenting with the power settings.
Slow down, rest the shroud on your free hand and try and get the beads straighter and more even width-wise.
Don't even attempt any joints yet, just practice on your technique and leave that for another day.
Try and leave runs of tacks first,
Find out how long you can hold the puddle before it blows through and can use this as a guide to your run's of weld.