It's always tempting to rush headlong into one's first DDA and just throw a bunch of launchpads together. If you plan on making more DDAs, I highly recommend you explore other methods of propulsion, including bounce blocks, thwumps, and trap doors. You can learn how to use these just by watching highly-rated DDAs.

That being said, I liked that you had rockets. Keep incorporating rockets into your maps and work on making them last as long as possible. I didn't, however, like how there were so many unneeded objects. There were dozens of gold pieces and launchpads that N never hit. That's just messy.

http://numa.notdot.net/map/110583. Yes, I know, that's one of mine, but it's been rated fairly high (yes, authors of a map can see ratings of that map before 5 are amassed)

much Launchpads, and you used gold overexcessively. Check the bitesized maps for more ideas on how a dda should be made.

NR