I really like this as an unique twist on a typing game by making you type with your non dominant hand! although i think to even out the challenge, maybe you could include an option to flip the game for left handed people haha.
I like that the little gnomes want to help me and the sprite work of them and the keyboard is very nice. especially like the way the words fall into a pile and that letters you type effect all words in the pile that's a nice touch I haven't seen before in a typing game! The upgrades are decent and seem to fit into the theme in a clear straight forward way.
I like that you have included a sound effect for the gnomes jumping on the keyboard that's cute idea however it starts to feel a little bit annoying after a while so I would suggest having more of mix of sounds it makes and to turn the volume down a little bit. would also be nice to have some music too.
Good Job! : )