both good and bad but im not one too judge

i'm not exactly what you would call an expert in the creation of DDAs, but all of mine do relatively well, so i'll give you some advice. Frist of all, you should try to avoid launch pads all together and use more interesting forms of transportation (my map "more mass mayhem" does that pretty well so you could try checking it out). also, gold delay on launch pads is another no-no, especially if its for a really long time, like in the V part of the bottom middle. Also, try to not mass launch pads in a place where 1 or two will do. Finally, try to get more close calls. However, it was very well done for a first DDA (about 1948584729523 times better then my first) so 4/5 :-D

all the bad things
1. N dies
2. Big line of launchpads
3. Gold Delay
all the good things
1. close calls
2. that thing with the bounce block and the launchpad. (for some reason i like this)

Overall
Pretty good for a first DDA