Looks about right. One thing I see is that (from the video on youtube), it appears that your jumps with the "frog" are kinda partial as far as from one point to another. In other words....you seem to jump up a few pixels/positions that are not entirely centered on the same horizontal as the vehicles are. Not sure if you planned it that way, but that is what the vid seems to show.
If I recall correctly, the original, when you jumped horizontally in positions, it put you directly into that line (ie. from the starting point, one jump north puts me directly into the row of the first vehicle). It appears from the video this is not true at some points.
One other side note, I believe the level said 3, seems like the vehicles are running quite fast for just level 3. I know you just want to challenge the player, but at the same time, you don't want to discourage (making vehicles so fast as it may be too hard for some). It is a fine line to make that balance I am sure, but to me, for level 3, some of those looked quite fast, just an opinion!
Other than that, and the limited video, pretty decent start I think.
*Edit* - I was looking at the lives counter, apparently this was level 0, meaning the start? If so, yeah, slow the vehicles.
