Here's some feedback
Panel 1: this is drawn pretty well so far, especially the guys below spidey. Spidey's butt is too big/round and his waist is too small. I think it may be effective to make spidey a little larger as well, exaggerate the distance a little more. his shoulders could use a little more muscle as well, he's a teenager but he's no slouch. Your perspective here is alright, but the end of the building by the guys on the street seems like its leaning too far to the left. If you tilt the building's vertices to the right, it should fix it, because spiderman and the guys on the street seem to be in good perspective. i REALLY love the guys on the street, great job.
panel 2: his hands are too small here. since his spidey sense is going off, you could have benefited from a more dramatic titled angle, just showing his face. I think that would have increased the drama a lot more.
panel 3: i want to see some motion lines or something to know where the snowball came from. the splash is pretty good though. in this panel I think you could have made spidey smaller so you could fit the whole pose into the panel without it feeling cramped. In the 1st, 3rd, and 4th panels spideys body is about the same size, you want to make sure you get a good variation of figure sizes in a full page. If he's pushing off the ledge with his hand, his body will center itself on a line of gravity because he is pushing off upwards with his hand.
panel 4: I don't know if Torch or Spidey is speaking first here, if spidey is, push him farther left and leave some room above him for the words. then have torch a little below/farther right and iceman off to the right side. that way as we read we can follow the words without any problem since they are clearly left to right.
overall this is well drawn, and with a little tweaking here and there you can have a great page! want to see more!!!