The blobs could be not going fast enough, or it could be that you mixed too big of a batch, or you may have added a few drops too much hardener. They will sand off when it all cures, but it is going to take some elbow grease. If you happen to see blobs again then I would suggest scrapping them off with a knife (not one used for food though) to save a bunch of time and effort sanding. Making smaller batches of resin saves material and effort.
Other than the blobs it looks like you resined well, no obvious warping, and only one or two drips. Great job! Also, good job repepping the hand plate, some people don't want to repep parts because it feels like they are good enough and they don't want to feel like they wasted their time on the first piece. You are much better off pepping a second part and being happier with it.
Keep up the good work!
PS, if the helmet is hard enough I would suggest removing the blobs before the next coat of resin on the outside. But don't force them too much, It would suck to see the helmet get warped for that.