Did you know you can also jump over plant in level 3? It isn't even that hard! Just when you're on top of the slope that's closest to plant, jump and hold and you should grab the stone structure by the plant and climb on top of it, and here it is! (It's not always working).

In level 1, after sliding on this slope, you can actually save 3 secs by implementing "perfect staircase" as I like to call it. It means, that after getting more speed on slope, at the end by the staircase, it's barely possible to climb it without stopping.

Sehr gut*, but at the end of level 3, it's barely possible to jump over piranha plant by grabbing the edge of that stone structure, and immediately pressing up arrow, to get on it.

*Sehr gut - really good said in german. I like german.

Just a tip.

Sub 1:50 is possible, 'cause after doing that speed up glitch on slope, on the staircase it's possible to jump over it without stopping! Maybe you don't understand what i'm saying so here is proof to that: