Need Help- at home set

This is my second set. Took me about 3 hours. Used tips which took unreasonably long. Wondering hot they got so bumpy with lots of teeny tiny holes. Some spots have discoloration. I did 4 and 5 dips, depending on how well I was able to shave the extension to be flush with my nail. After the dips I did activator, waited, filed/buffed with a dremel, activator again, waited, and then did a top coat. My first set looked better then this. Any tips ????