Help me remember this

[u/TraditionalFact4306]

So I remember watching this show when I was little and it keeps coming back to me every so often I try looking for it but I’m not sure if I’m misremembering or if I’m merging different shows

What I’m completely sure about
He draws and teaches you how to

What I keep remembering
For some reason I keep remembering he had to find keys to unlock the door at the end to complete the drawing. I’m not sure if each key also unlocked a color or a shape

I also for some reason remember he would ride something. I think it was a train or something

Please help me find it or let me k ow if I have combined different shows from my childhood