I suppose this is crafted from a gigaminx? Or did you have it printed?
When you solve it, don't make the mistake of thinking of it like what it is: a gigaminx shapemod. If you do that you will end up with difficulties pairing up the tips, which are the centers on the gigaminx. At least you will need a lot of unnecessary moves and thinking.
Instead pair the edges of this one, which would be like pairing up center edges and edges on a gigaminx. Then pair up the centers of this puzzle. That would be like pairing the corners on a gigaminx.
By solving it this way, it will be much easier.
If you don't believe me, try to solve a 5x5x5 rubik's cube by paring up corners first.
It will get crazy for the last two corners if you aren't lucky.