Single player, by 
Unfortunately, this level has quite a few things which could be improved significantly.
First of all, when uploading a level, make sure you fill out the details about your upload correctly. This was created with TSF, but says its 1.23 compatible. (But hey, at least it gave me reason to use Zaps’ level convertor http://www.jazz2online.com/J2Ov2/downloads/info.php?levelID=5368) In addition, it seems to be designed as a single player level, but is labeled as other. Although these are not major issues, and don’t affect the value of the upload, they are somewhat annoying, and annoying the people who download the rate your levels is never really a good idea.
The level itself could be improved greatly. First of all, the background has transparency, which is almost always a bad idea, as it makes ugly trails behind sprites. The ground in layer 4 also has holes in it, which make it look very unnatural. There are also only 4 events in the entire level.
Anyway, I could go on about every little specific flaw in the level, but I feel the best thing I could say is this: Don’t upload what you wouldn’t want to download. Poppst him/her-self admitted that it was “very bad!” You could create a much nicer level if you spent more time working on it before uploading. If you feel that you still haven’t created a worthwhile level, there are many resources you can find on this, and other Jazz-Related websites that would help you. For example, JCS.Ref can be found at http://www.jazz2online.com/jcsref/, and contains lots of useful advice for creating better levels. I would also recommend joining the community fourums (at http://www.jazz2online.com/jcf/). There you would have the chance to talk to other Jazz fans, who could give you advice and help. For example, some people might be willing to beta-test any levels you create before you upload, and offer constructive criticism.
