I commend you for your desire to be a worthy partner. I feel the same way about this.
Majority of my pad holding experience is with a partner that weighs 40 lbs more than me. And whenever there's a bigger weight difference than that, I have to be really diligent with holding, no day dreaming. Here are some ideas that helped me:
- turn your shoulder in to meet the punch as opposed to just moving your arm (similar to you throwing a cross at the same time). This was the big one for me to make sure I don't injured my shoulder. Also, it feels really solid and good for the person hitting.
- stand with a solid base, like your fighting stance, with feet apart and knee bent
- mirror the footwork of the combo. I mean, your partner would be taking a small step forward with every punch, so you would take a small step backwards while receiving each of those punches
- tuck elbows into your body when holding for kicks and sink your weight down. If the kick is too hard and throws you back, don't be afraid of it. Just know that it's going to throw you back will make your feet move with it, so you won't fall.
- breathe out as you receive the punch. I think it helps you generate more force to meet the punch/kick. The impact don't affect you as much.
I guess a lot of these are the same for if you are hitting... Which makes sense, as the things you do when hitting, like breathing out, turning your shoulders, having a string base, are meant to put you in a strong position.
I remember being really driven to hold well when I first found a partner to do pads with. I wanted to make sure it was worthwhile for my partner. Sometimes I meet training partners that are demanding of having good partners (always asking their partners for favours and help) but don't value the other side of it which is being a good partner. I think the effort you put in to holding pads is beneficial to both you and your partner. Your partner would get a good pad session to improve their skills, and you would get stronger as you regularly meet heavy punches. Your distancing and ability to see punches and react improves from holding pads too. It's awesome that you consider your pad holding skills.