Didn't realise I'd typed so much :P

You could have had less gold laid out strategiccaly throughout the level, as to make it challenging to get, instead of having it in obvious, easy to get places. You could also have made your exits a little more visible. Nobody likes to search for things that are hidden, they just like it to be there in front of them, and for them to have to overcome some challenge to complete the level. At the minute your level is quite challenging, but it's not particularly fun to play. You could take away most of your bounce blocks, and instead place 4 or 5 throughout that area, as to make it difficult to pass, but not frustrating. You could also have taken the laser drones out of those small passages, as it is a little claustrophobic and annoying to surpass them.
Last, but not least, you could try and make your tiles look a little more attractive. Look at some of the tilesets of the top rated pages, and make some levels based on them. Then as you get into the way of it, you could make your own tilesets based on those particular themes. Eventually you'll be able to create your own style of tiles. 3/5.