Design Usage:
The whole design of the Level was nice. You are on a Mountain with cherry full of trees as I can see at the background at least. There are Bamboos at the Foreground. One of which are regular Blocks, the other ones which are smaller are climbable ones which was a nice idea for this Level. The tileset you chosed out was nice for this Level but what feels a bit odd that there are cutoff at the corner pieces. What feels even more strange that there is even a tile specificly for the corner pieces with grass on it yet you used the one without the grass for it. The music you chosed was neat but for some reason the quality is sort of unbalanced, like it isn't at the same quality as the regular theme. The Level's length is basic for a regular Mario Level like it is so it was nice but the secret area of how it was made was a little low reward due to the fact that you have to at least have a ability to destroy gray Bricks in order to get one single Moon Coin... and that's it. Low reward just for finding it or having no reward without having that specific Power Up is not a nice feat. The end you end it with a Star.
NPC Placements:
Your little experimental of the sprite placements was neat to say at least. Your hints as they are climbable on these little Bamboos was nice since it is literally required later on in the Level to get over giant Holes. Your Enemy variety was average for a regular Nintendo playstyle like in SMB but personally you should add a bit more since it is on SMB3 like those jumping Para Goombas and Koopas and others for hovering over climbing sections so you actually have more Challenge over the Stage itself but since later on after the halfway point you encounter a Thunder Lakitu that throws Lighting Bolts (SMB2 Sparkies) at you it was ok. Still, some red Para-Goombas would be nice at least to have more variety of Enemies. Coin Placements were average at least but it could of have done a bit better by adding a little bit more into the Level especially at the secret room so you gain a better reward by finding it except for one Moon Coin or nothing depends of your own Power. Speaking of Moon Coins, there are only 3 of them for you to collect except of 5. With that you can't get a 1UP once you collect them all. Either add 2 more in the Level or make sure you get a 1UP after you have collected the 3rd Coin so you won't waste time collecting them all just for some Points which are useless anyway because it won't save. Power Up playements were nice but what I personally don't get near the end that you only gain a Mushroom in a Block except for a better Power Up like at the start and near the Midway Point. The Hammer Suit Power Up was hidden in this Level as it makes it hard to get of your first try. Personally it is somewhat a mean secret to hide something like that. Maybe it could of be better to hide somewhere to make it a little bit more obvious to find like make it a giant Block instead of a regular sized Block. It was after the halfway point where two Cherry Trees are located and inbetween there is your Hammer Suit but not completly obvious at first since it isn't completly at the middle of the two trees.
Overall Rating Score: 6.75
Pretty Good
It was a pretty nice averagely made Mario Level with nice design but issues are taking over the board.