Keywords are important for sure...but there is only so many kaywords we can use for a specific art subject...
but we always feel finding some magic words hoping they will take care of the business.... maybe take care of the business over night ;o)
There are some tools online where you can type in your main keyword and it will generate all possible keywords for you. Then you select those you think are relative to your art.
I think you should select keywords they are really representing your art....for example you have an detailed image of a bee sitting on a flower
"pollinate" is not relative keyword for art shopper to use in search.
So I would not wory about keywords like this even you can find images under this word....in the fact when people do search for flower art, or /and with bee they will not enter in search pollinate - there is a signicicant differents between keywords used by art shoppers and art creaters.
(entering keyword "pollinate" it is more like our fantasy to believe in)
So the point is..to get to the few base keywords like flower, plant, closeup, bee, yellow, purple and create all the word combinations you can....like bee on flower, closeup flower, that is very easy to do....and don't forget to take a deep breath and relax...it will work...;o)
you have nice work , good job
....and sorry for my English....I hope you can get a sense from what I mean ;o)
this is just my opinion based on my experience....good luck
PS and if you want to enter breed keywords, enter most of the large dog breed...since in the logo it is not clear and specified, which breed it is...just load it...;o)