Agree with cyto and everyone else. Now that you have it, put it away until you have everything you need and a complete post cycle therapy. First off no deca on your first cycle. Should be test only for many reasons but you need to read all the stickys at the top of the forum first and the new member threads. Then we can help.
If you have 2 ten ml vials then you don't have enough. If you don't have a post cycle therapy (pct) it will be worthless. All AAS will shut down natural test production. You need post cycle therapy (pct) to get your body producing test again. If not you will lose any gains you made, will lose libido, can become depressed, lethargic, etc etc etc.
Deca is a 19nor and can produce side effects thru prolactin. The most common are limp dick, gyno, bloat. Test converts to estro and can cause gyno(bitch tits), loss of libido, acne, bloating, high BP etc etc.
Things to research:
First cycle
AI
Serm
Dopamine agonist
Don't waste your time or risk your health. Hold off until you understand this a little better.