Originally Posted by Mitch62

I'm currently trying to read my first Finnish book ... well sorta ... it's a childrens' book by P. Koskimies, and the title is: Pupu Tupunan pulma, which I translate as: Pupu Tupuna's Problem.
Since I don't have people around in Real Life who could correct my mistakes, I hope it's ok to post some of my translations here to get corrections and maybe some further remarks. Perhaps it helps others who try to learn Finnish ? it for sure would help me!
So, the first page reads:

On kaunis kesäpäiva.
It's a beautiful summer day.
Aurinko paistaa ja kukat tuoksuvat.
The sun is shining and the flowers are smelling.
Vallaton Pupu Tupuna lähtee leikkimään läheiselle pellolle.
Untamed (valta authority + -ton) Pupu Tupuna goes to play (or is it an adverb?) to the nearby field (from pelto).
vallaton=unruly, someone who's full of energy and jumps around all the time.
Iloisena ja onnellisena se loikkii ympäriinsä.
Joyfully and happily (What does the -sena indicate?) it springs all around.
-sena means to be as something (adjective) i'm not sure if you get what i mean :/
The verb loikkia feels like . First: -kk-, and second: -i. But the loikkii in the text looks pretty normal. So, I hope the forms in the Present Tense are:
minä loikkinloikin
sinä loikkitloikit
hän/se loikkii
me loikkimmeloikimme
te loikkitteloikitte. no double k's, except with s/he
he/ne loikkivat (only back and middle vocals).
I hope at least some bits are correct .

Originally Posted by Mitch62

(What does the -sena indicate?)

Originally Posted by Mitch62

minä loikkin
sinä loikkit
hän/se loikkii
me loikkimme
te loikkitte
he/ne loikkivat